1390-433 - The Hong Kong–Zhuhai–Macau Bridge (HZMB), this 55 km bridge–tunnel system is the longest sea crossing and the longest open-sea fixed link in the world. It consist of three cable-stayed bridges, an undersea tunnel, and four artificial islands.

832-406485 - Tourists walking on illuminated footpath inside the famous postojna cave, a karst cave system near postojna, slovenia

1387-1513 - A technical cave diver using a diver propulsion vehicle (DPV) to dive into the Blue Springs state park cave system near Marianna, Florida.

1387-1089 - Technical diver in cave system, Mexico.

1387-1084 - Diver enters the cavern system at Chac Mool cenote in the Riviera Maya area of Mexico's Yucatan Peninsula.

1387-1079 - A cavern diver ascends into the light filtering into cenote system at Yucatan Peninsula, Mexico.

1387-1077 - Two scuba divers in the Garden of Eden cavern part of the cenote system on the Yucatan Peninsula of Mexico.

1387-1074 - A cavern diver enters the Taj Mahal cenote system on Mexico's Yucatan Peninsula.

1387-1071 - Cavern divers enter cenote system in Mexico's Yucatan Peninsula.

1387-1064 - Scuba diver in the Garden of Eden cavern part of the cenote system on the Yucatan Peninsula of Mexico.

832-406075 - Picturesque decayed Khmer temple in the jungle Ta Prohm Angkor Siem Reap Cambodia

844-41027 - View of vintage tram and colourful buildings in the Alfama District on a sunny day, Lisbon, Portugal, Europe

844-41024 - View of Campo Pequeno Metro Station interior, Lisbon, Portugal, Europe

844-40987 - View of vintage yellow No28 tram on a sunny day in the Alfama District, Lisbon, Portugal, Europe

844-40934 - View of vintage Gloria Funicular at dusk, hilltop tram ride, Lisbon, Portugal, Europe

1382-3609 - Canoe net fishermen on Mono River mouth in Grand-Popo area, Benin,Gulf of Guinea,West Africa

1373-563 - Copenhagen, Denmark ��� View of Christiansborg Palace, home to Denmark���s Parliament, Supreme Court, and Royal Reception Rooms, symbolizing centuries of political and royal power.

844-40757 - View of vintage trams in Alfama, Alfama District, Lisbon, Portugal, Europe

844-40737 - View of vintage tram and colourful architecture in Alfama, Alfama District, Lisbon, Portugal, Europe

844-40736 - View of vintage trams and colourful architecture in Alfama, Alfama District, Lisbon, Portugal, Europe

844-40645 - View of vintage No28 yellow tram in Lisbon city centre, Lisbon, Portugal, Europe

1382-3463 - Mahaweli River, Uva province, Sri Lanka, Indian subcontinent, South Asia

1126-2661 - Postojna Caves, Postojna, Slovenia, Eastern Europe

1126-2660 - Postojna Caves, Postojna, Slovenia, Eastern Europe

1126-2659 - Postojna Caves, Postojna, Slovenia, Eastern Europe

1160-5575 - Crossrail Station, Canary Wharf, London, England,

685-2967 - Freeway aerial view, United States of America

685-2964 - Robot Sandwich delivery, United States of America

1245-3877 - Cenote Oxman, Valladolid, Yucatan State, Mexico

845-1297 - Penfold Design Postbox in Buxton, United Kingdom

1188-1138 - View of electricity plant powered by wind power turbines in Maldonado department, Uruguay

1352-318 - Routemaster buses parade at the 70th anniversary of the first Routemaster bus, RM1, London, England, United Kingdom

1352-309 - View towards the Central Tramway Company cliff railway, Scarborough, North Yorkshire, England, United Kingdom

1352-308 - View towards the Central Tramway Company cliff railway, Scarborough, North Yorkshire, England, United Kingdom

1358-630 - St. David's Battery, UNESCO, four guns installed 1910 by British to defend deep water channel leading to Royal Navy Dockyard and Hamilton, Bermuda

1382-2849 - System of protection against invasion of desert sand in palm grove of Zagora, Draa River valley, Province of Zagora, Region Draa-Tafilalet, Morocco

1112-11826 - Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing within the town limits of Longyearbyen, Svalbard, Norway

801-4353 - Centuries Old Cannon Artillery, Castle of the Three Kings of Morro, UNESCO, Havana, Cuba

1112-11608 - Johns Hopkins Glacier, Glacier Bay National Park in Southeast Alaska, United States of America

1184-13698 - Local transport on the Sangha River, Ouesso, Republic of Congo

1112-11504 - Underwater view of of the reef system at Half Moon Caye, UNESCO, Mesoamerican Barrier Reef, Belize

1112-11502 - Underwater view of of the reef system at Half Moon Caye, UNESCO, Mesoamerican Barrier Reef, Belize

1184-13440 - Astronomical instruments of Jantar Mantar, UNESCO, Jaipur, Rajasthan, India

1231-132 - A funicular railway car in a station, Naples, Campania, Italy

1112-11482 - West Indian manatee (Trichechus manatus), with snorkeler near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

1112-11472 - West Indian manatee (Trichechus manatus), on the sand near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

1199-618 - A vertical shot of a Hong Kong Tram passing the colonial Old Supreme Court building, Hong Kong, China

1372-1008 - A vibrant view of Tokyo skyline featuring train tracks weaving through modern skyscrapers in a busy district, Tokyo, Honshu, Japan

809-9191 - The new elevator of the thermal baths using a wastewater-based system, Saint Gervais, Haute-Savoie, France

1247-270 - View of trains from the Lotus Tower, Colombo, Sri Lanka

1247-265 - View of trains from the Lotus Tower, Colombo, Sri Lanka

1372-980 - Rows of dye-filled stone basins in a traditional leather tannery in Fes, Morocco

1382-2695 - Irrigation canal, Falaj irrigation system (Falaj Al-Khatmeen), UNESCO, palm grove, Birkat Al Mouz, Al Dakhliya region, Jebel Akhdar foothills, Oman

844-39043 - View of Skyway Monte Bianco cable car and snow covered mountain from Entreves in winter, Entreves, Aosta Valley, Italian Alps, Italy

1265-814 - Traffic on a busy intersection on Sheikh Zayed highway, Dubai, United Arab Emirates

1365-824 - Ribera dos Caldeiroes waterfalls, near Achada, Sao Miguel, Azores Islands, Atlantic, Portugal

1265-674 - Underwater marine life on coral reefs, Thailand

1369-305 - Green tram and Nam Tin building, North Point, Hong Kong, China

844-38604 - View of interior at Abholer-Parkplatz Spandau Bahnhof, Spandau, Berlin, Germany

844-38601 - View of interior and train at Abholer-Parkplatz Spandau Bahnhof, Spandau, Berlin, Germany

1382-2237 - Bathers in irrigation canal, Birkat Al Mouz, Al Dakhliya region, Falaj irrigation system (Falaj Al-Khatmeen), UNESCO, Oman, Arabian Peninsula

1382-2236 - Bathers in irrigation canal, Birkat Al Mouz, Al Dakhliya region, Falaj irrigation system (Falaj Al-Khatmeen), UNESCO, Oman, Arabian Peninsula

1382-2234 - Irrigation canal in palm grove. Birkat Al Mouz, Al Dakhliya region, Falaj irrigation system (Falaj Al-Khatmeen), UNESCO, Oman, Arabian Peninsula

1382-2205 - School bus in front of a school, Al Sharqiyah region, Sultanate of Oman, Arabian Peninsula

844-37719 - View of rickshaws near Togetsukyo Bridge over Katsura River, Sagatenryuji Susukinobabacho, Ukyo Ward, Kyoto, Honshu, Japan

1382-1992 - Metro railway on St-Martin bridge under the Bessieres bridge with Cathedral of Notre Dame in background, Lausanne, Canton of Vaud, Switzerland

844-37602 - View of city tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

844-37599 - Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

844-37598 - Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

844-37596 - Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

844-37595 - Elevated view of traffic and tram on major street during daytime, Hondori, Naka Ward, Hiroshima, Honshu, Japan

792-902 - Sheffield trams (Supertram) approaching a stop in Church Street, Cathedral Quarter, Sheffield, Yorkshire, England

792-900 - Sheffield tram (Supertram) on overhead track approaching Commercial Street from Park Square, Sheaf Valley Quarter, Sheffield, Yorkshire, England

792-899 - Sheffield Railway station seen from the east with Supertram stop in foreground and city centre behind, Granville Street, Sheffield, Yorkshire, England

844-37494 - View of bullet train in Kanazawa Station, Kanazawa City, Ishikawa Prefecture, Honshu, Japan

844-37355 - View of intricate rail and road network crossing, Minato City, Tokyo, Honshu, Japan

844-37353 - View of bullet train passing over bridge with city traffic, Minato City, Tokyo, Honshu, Japan

860-292906 - Concordia staff on their knees helping a person lying on a stretcher. Helped by a snowmobile. Rescue exercise in the event of an accident involving several victims. These frequent exercises are supervised by the doctor. All the resort's winter residents are assigned a very specific role in the event of an accident, illness or fire. A redundancy system allows this system to function in the event of one or more winterers failing to respond. Concordia Antarctic Research Station, Dome C plateau, East Antarctica.

860-292732 - Pond surrounded by molinia and spruce trees, fagne water system, Ardennes, Belgium

1243-639 - The iron ore mine Cockerill d'Esch-sur-Alzette played a major role in economic boom from the 1870s to the 1990s, Luxembourg

844-37177 - View of Japanese rickshaw (jinrikisha) in busy street scene, Asakusa, Taito City, Tokyo, Honshu, Japan

1311-1042 - The interior of the Supai Tunnel along the North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

1311-1033 - The Coconino Overlook along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America

1382-1655 - Llanfair Light Railway, Llanfair Caereinion, Welshpool, Powis, Wales, United Kingdom

809-9152 - Bas-reliefs of Hindu epic Ramayana and Bhagavata Purana, Prambanan, 9th century Hindu temple, UNESCO, Java, Indonesia

800-4326 - Train of cogwheel railway at Schynige Platte, Jungfrau Region, Bernese Oberland, Switzerland

800-4291 - Harder Kulm train, Interlaken, Bernese Oberland, Switzerland

1358-525 - Steam emitted from the New York Steam System, dating back to 1882 providing steam to heat, cool or disinfect around 1,700 buildings, New York, United States of America, North America

1358-524 - Steam emitted from the New York Steam System, dating back to 1882 providing steam to heat, cool or disinfect around 1,700 buildings, New York, United States of America, North America (Excess steam is vented from orange and white funnels known as stacks.)

1358-523 - Steam emitted from the New York Steam System, dating back to 1882 providing steam to heat, cool or disinfect around 1,700 buildings, New York, United States of America, North America

1382-918 - Bicycle-sharing system in Zona Rosa area, Bogota, Colombia, South America

1382-919 - Bicycle-sharing system in Zona Rosa area, Bogota, Colombia, South America

1131-2243 - AI generated image of a Dog robot jumping over barrels in front of a white background

1131-2238 - AI generated image of a Futuristic humanoid robot working in a car assembly production line

1387-431 - A colorful West Indian starfish, Oreaster reticulatus, crawls over a shallow, sandy seafloor in Turneffe Atoll in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.

1387-430 - A colorful West Indian starfish, Oreaster reticulatus, crawls over a shallow, sandy seafloor in Turneffe Atoll in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.

1387-429 - A beautiful coral reef, dominated by colorful gorgonians, grows along the edge of Turneffe Atoll in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.

1387-426 - A beautiful coral reef, dominated by colorful gorgonians, grows along the edge of the Blue Hole in Lighthouse Reef in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.

1387-425 - A beautiful coral reef, dominated by colorful gorgonians, grows along the edge of the Blue Hole in Lighthouse Reef in the Caribbean Sea. This reef is part of the massive Mesoamerican Reef System, the second largest barrier reef on Earth.

1387-424 - A large roughtail stingray, Dasyatis centroura, lays on the seagrass-covered seafloor of Turneffe Atoll off the coast of Belize. This reef is part of the massive Mesoamerican Reef System in the Caribbean Sea, the second largest barrier reef on Earth.