1116-29989 - Pearl nautilus shell half showing chambers and spiral (Sepia photograph).

1116-24562 - Bridal Chamber in the Private Apartments of the Chuteau de Cheverny, Cheverny, France

1116-13407 - Canada's Books of Remembrance in the Memorial Chamber at the Parliament Buildings, Ottawa, Ontario, Canada

1116-13411 - Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-13412 - Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-13406 - Stained glass windows of the Peace Tower Memorial Chamber in the Centre Block of the Parliament Buildings, Ottawa, Ontario, Canada

1116-13409 - The throne and chair in the background are used by the queen and her consort, or the governor general and his or her spouse, respectively, during the opening of Parliament in the Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-24468 - Private chamber in the Chuteau de Langeais, Langeais, Indre-et-Loire, France

1116-13414 - Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-13410 - Desk in the Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-13413 - Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-13415 - Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-24745 - The Empress' chamber in the Palace of Fontainebleau, Fontainebleau, Seine-et-Marne, France

1116-13408 - Stained glass windows of the Senate Chamber in the Centre Block of tthe Parliament Buildings, Ottawa, Ontario, Canada

1116-5588 - Poulnabrone Dolmen, The Burren, County Clare, Ireland

1116-1666 - County Cork, Ireland, Wedge Tomb

857-66366 - With Vice President Dick Cheney, seated left, and Speaker of the House Nancy Pelosi, D-Calil, seated right, presiding over the speech, President of the United States George W. Bush gives his final State of the Union address to Congress at the Capitol Building on January 28, 2008 in Washington, D.C.

857-66368 - Senator and Presidential Candidate Hilary Clinton greets audience members after President of the United States George W. Bush gave his final State of the Union address to Congress at the Capitol Building on January 28, 2008 in Washington, D.C.

857-58612 - The Underworld - Photographs from caves all over the world

857-40636 - Cave explorer ascends a knotted rope out above a pool of water in a cave in England called Streaks Pot.

857-40626 - Cave explorer struggles to negotiate a tight squeeze in the entrance of a cave in the White Mountains on the island of Crete.

857-40621 - Katie Dent climbs up a rope in a cave in the White Mountains on Crete.

857-40631 - Cave explorer forces his way up through a narrowing in the rock in a cave high in the White Mountains on the island of Crete.

857-40638 - Cave explorer crawls through a low section of cave passage underground in Derbyshire England.

857-40627 - A cave explorer has to remove his helmet in order to pass the tight squeeze in an entrance to a cave in the White Mountains on t

1194-1543 - Dominican republic cloning plants in a sterile chamber, jarabacoa

739-1172 - Entrance chamber of the catacombs of San Gaudioso (St. Gaudiosus), Naples, Campania, Italy, Europe

800-886 - Audience Chamber, Island Gardens, Polonnaruwa, UNESCO World Heritage Site, North Central Province, Sri Lanka, Asia

800-888 - Audience Chamber, Island Gardens, Polonnaruwa, UNESCO World Heritage Site, North Central Province, Sri Lanka, Asia

981-33 - One of many entrances to megapode mound containing Komodo dragon egg chamber. Film crew found the nest the very day the eggs hatched after 9 month gestation. Young hatchling Komodo dragons (Varanus komodoensis) and their egg cases.

981-68 - One of many entrances to megapode mound containing Komodo dragon egg chamber. Film crew found the nest the very day the eggs hatched after 9 month gestation. Young hatchling Komodo dragons (Varanus komodoensis) and their egg cases.

981-41 - Female Komodo dragon (Varanus komodoensis) entering one of entrances to her nest chamber in a megapode mound.

981-50 - Komodo dragon (Varanus komodoensis) - female resting after tunneling in megapode mount above her nest chamber.

981-71 - Komodo dragon (Varanus komodoensis) - claws for digging tunnels to nest chamber up to 4 metres deep.

981-47 - Komodo dragon (Varanus komodoensis) - female resting after tunneling in megapode mount above her nest chamber.

981-48 - Komodo dragon (Varanus komodoensis) - female resting after tunneling in megapode mount above her nest chamber.

981-56 - Komodo dragon (Varanus komodoensis) - female resting after tunneling in megapode mount above her nest chamber.

911-7162 - The Chun Quoit, an ancient Neolithic burial chamber, Cornwall, England, United Kingdom, Europe

911-5010 - The Chun Quoit, an ancient Neolithic burial chamber, Cornwall, England, United Kingdom, Europe

911-7616 - Workers in the offshore industry practise escaping from a smoke chamber as part of an industry training course, Billingham, Teesside, England, United Kingdom, Europe

911-5009 - The Chun Quoit, an ancient Neolithic burial chamber, Cornwall, England, United Kingdom, Europe

911-5011 - The Chun Quoit, an ancient Neolithic burial chamber, Cornwall, England, United Kingdom, Europe

911-4931 - The Chun Quoit, an ancient Neolithic burial chamber, Cornwall, England, United Kingdom, Europe

834-7098 - The king's bed chamber, Usse Castle, Indre et Loire, Loire Valley, France, Europe

834-7072 - The Council Chamber, Amboise Castle, Amboise, Indre et Loire, Loire Valley, France, Europe

815-1434 - Main chamber, National Assembly for Wales, architect Richard Rogers Partnership, Cardiff, Wales, United Kingdom, Europe

834-6249 - The Gothic Chamber, City Hall, Bruges, Belgium, Europe

834-6248 - The Gothic Chamber, City Hall, Bruges, Belgium, Europe

807-836 - Main tomb chamber, Humayun's tomb, built in 1570, UNESCO World Heritage Site, New Delhi, India, Asia

807-834 - Tomb chamber, Humayun's tomb, UNESCO World Heritage Site, New Delhi, India, Asia

834-1234 - Waterloo Chamber, Windsor Castle, Windsor, Berkshire, England, United Kingdom, Europe

815-884 - The Star Chamber before matting laid, Bolsover Castle, Bolsover, Derbyshire, England, United Kingdom, Europe

817-20928 - Ecuador, Guayaquil city, Factory shrimp and fish processing, Freezing chamber.

817-20929 - Ecuador, Guayaquil city, Factory shrimp and fish processing, Freezing chamber.

797-7097 - Ireland, County Clare, The Burren, Poulnabrone Dolmen - These stones created a chamber within which the dead were placed

759-6412 - Topkapi Palace Imperial Council Chamber, Istanbul, Turkey

759-6414 - Topkapi Palace Imperial Council Chamber, Istanbul, Turkey

759-6413 - Topkapi Palace Imperial Council Chamber, Istanbul, Turkey

809-2297 - Holocaust Chamber memorial slabs, Jerusalem, Israel, Middle East

815-40 - Dyffryn Ardudwy pre-historic burial chamber, Gwynedd, Wales, United Kingdom, Europe

794-776 - Lanyon Quoit burial chamber, Madron, near Penzance, Lands End, Cornwall, England, United Kingdom, Europe

794-777 - Lanyon Quoit burial chamber, Madron, near Penzance, Lands End, Cornwall, England, United Kingdom, Europe

16-3249 - Neolithic burial chamber built between 4000 and 2000BC for communal burial of the dead, it would originally have been covered with earth or stones, Bodowyr Burial Chamber, Anglesey, North Wales, United Kingdom, Europe

641-12011 - Legislative chamber, interior of Palacio Legislativo, the main building of government, Montevideo, Uruguay, South America

641-12010 - Legislative chamber, interior of Palacio Legislativo, the main building of government, Montevideo, Uruguay, South America

797-5641 - Dating from the Neolithic Period 4000-2500 BC this site is one of the finest examples of a Court Cairn in Ireland, It has a cairn entrance passage an oval court and a double chamber gallery, Creevy Keel, County Sligo, Republic of Ireland

685-1796 - Chamber, New Scottish Parliament building, architect Enric Miralles, Holyrood, Edinburgh, Scotland, United Kingdom, Europe

749-768 - Topkapi Palace, the Imperial Council chamber, Istanbul, Turkey, Europe

747-730 - Piazza del Signori with the Dante statue, Chamber of Commerce 1301, and Scaligeri Palace, Verona, UNESCO World Heritage Site, Veneto, Italy, Europe

698-2393 - Visitors walk up a spiralling ramp around the cone shaped funnel in the dome cupola, which has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

698-2386 - Visitors walk up a spiral ramp around the cone shaped funnel in the dome cupola, which has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

698-2385 - The cone shaped funnel in the dome cupola has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

391-2538 - Gas chamber, Auschwitz Concentration Camp, UNESCO World Heritage Site, Oswiecim, Poland, Europe

756-1208 - Burial Chamber of the Red Pyramid, Pyramid field of Dahshur, Egypt, North Africa, Africa

770-732 - Central chamber and side chambers built into the centre of the walls, Maes Howe chambered cairn, dating from 2700 BC, part of Central Mainland UNESCO World Heritage Site, Mainland, Orkney Islands, Scotland, United Kingdom, Europe

253-3634 - Dolmen, Neolithic burial chamber 4500 years old, Pentre Ifan, Pembrokeshire, Wales, United Kingdom, Europe

253-3633 - Dolmen, Neolithic burial chamber 4500 years old, Pentre Ifan, Pembrokeshire, Wales, United Kingdom, Europe

526-2380 - Opera and Chamber of Commerce, Lille, Nord, France, Europe

17-4369 - Detail of the coloured glass and mirror work in the audience chamber in the palace, The City Palace, Jaipur, Rajasthan state, India, Asia

508-40568 - The Lords Chamber, House of Lords, Houses of Parliament, Westminster, London, England, United Kingdom, Europe

120-4629 - Fresco of carpenters, within panels decorating vaulted ceiling of main audience chamber, Qasr Amra hunting lodge and baths, built by Ummayad Caliph Wallid I between 705 and 715AD, east of Amman, Jordan, Middle East

341-687 - The Chamber of Commerce, Abu Dhabi, U.A.E., Middle East

508-11896 - Statue of Julius Caesar in the Council Chamber, Capitol Hill, Rome, Lazio, Italy, Europe

641-6445 - Council chamber of the Collegium Maius Museum of the Jagiellonian University, the oldest university building and connected with Copernicus, Old Town District, Krakow (Cracow), UNESCO World Heritage Site, Poland, Europe

508-38219 - Interior of the Commons chamber, Houses of Parliament, Westminster, London, England, United Kingdom, Europe

314-1415 - The Chamber of Commerce building in the city of Lille, Nord Pas de Calais, France, Europe

312-1675 - Side view of Buddha image sitting in open chamber with stupas in background, Borobudur Temple, UNESCO World Heritage Site, island of Java, Indonesia, Southeast Asia, Asia

508-40570 - The Lords Chamber, Houses of Parliament, Westminster, London, England, United Kingdom, Europe

749-525 - The conference chamber at the Residenzmuseum, Munich, Bavaria, Germany, Europe

508-40567 - The Lords Chamber, House of Lords, Houses of Parliament, Westminster, London, England, United Kingdom, Europe

508-38120 - Interior of the Commons chamber, Houses of Parliament, Westminster, London, England, United Kingdom, Europe

508-38214 - Princes Chamber, Houses of Parliament, Westminster, London, England, United Kingdom, Europe

724-26 - Science Museum, former Chamber of Represtatives, Capitole, Havana, Cuba, West Indies, Central America

511-6082 - Citania de Briteiros, a Celtic iron age settlement dating from approximately 300 BC, with foundations of 150 huts, funerary chamber with carved doorway, near Braga, Minho, Portugal, Europe