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

The rock fortress of Sigiriya (Lion Rock), UNESCO World Heritage Site, Sri Lanka, Asia

Beida (Al Baidha) (Little Petra), Nabatean site near Petra, Jordan, Middle East

View of Meteora cliffs, UNESCO World Heritage Site, Thessaly, Greece, Europe

The Callanish (Calanais) Standing Stones, the Neolithic monument in Callanish, Isle of Lewis, Outer Hebrides, Scotland, United Kingdom, Europe

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

The Talati de Dalt, prehistoric, neolithic remains of Talayotic culture, Menorca (Minorca), Balearic Islands, Spain, Mediterranean, Europe

Rock carved granite image of the 7m tall standing Buddha, Gal Vihara, Polonnaruwa (Polonnaruva), UNESCO World Heritage Site, Sri Lanka, Asia

Castellana caves (Castellana Grotte), Apulia, Italy, Europe

Alignments of Megalithic standing stones, Carnac, Morbihan, Brittany, France, Europe

Hagar Qim, a megalithic temple, UNESCO World Heritage Site, Malta, Europe

Taula de Torre Trencada, prehistoric, neolithic remains of Talayotic culture, Menorca (Minorca), Balearic Islands, Spain, Mediterranean, Europe

Standing stones, Carnac, Brittany, France, Europe

Foggy sky over the earth pyramids, ancient rock formation, Renon (Ritten), Bolzano, South Tyrol, Italy, Europe

Ahu Akivi, an inland ahu, Easter Island, Chile, Pacific

Mnajdra, a Megalithic temple constructed at the end of the third millennium BC, UNESCO World Heritage Site, Malta, Europe

Beida (Al Baidha) (Little Petra), Nabatean site near Petra, Jordan, Middle East

Mnajdra, a Megalithic temple constructed at the end of the third millennium BC, UNESCO World Heritage Site, Malta, Europe

Necropolis, Facade Street, Petra, UNESCO World Heritage Site, Jordan, Middle East

Mnajdra, a Megalithic temple constructed at the end of the third milennium BC, UNESCO World Heritage Site, Malta, Europe

Hagar Qim, a megalithic temple, UNESCO World Heritage Site, Malta, Europe

Mnajdra, a Megalithic temple constructed at the end of the third millennium BC, UNESCO World Heritage Site, Malta, Europe

Stonehenge, Wiltshire, England, UK

Castlerigg Stone Circle (the Druid's Circle), Lake District National Park, Cumbria, England, UK, Europe

Aerial views of El Castillo and the Ruins of the Mayan temple grounds at Tulum, Quintana Roo, Yucatan, Mexico. Tulum is the site of a pre-Columbian Mayan walled city which served as a major port for Coba, in the Mexican state of Quintana Roo. The ruins are situated on 12 meter 39 ft tall cliffs along the east coast of the Yucatán Peninsula on the Caribbean Sea in the state of Quintana Roo, Mexico. Tulum was one of the last cities built and inhabited by the Maya; it was at its height between the 13th and 15th centuries and managed to survive about 70 years after the Spanish began occupying Mexico. Old World diseases brought by the Spanish settlers appear to have resulted in very high fatalities, disrupting the society, and eventually causing the city to be abandoned.

Aerial view of Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Aerial views of El Castillo and the Ruins of the Mayan temple grounds at Tulum, Quintana Roo, Yucatan, Mexico. Tulum is the site of a pre-Columbian Mayan walled city which served as a major port for Coba, in the Mexican state of Quintana Roo. The ruins are situated on 12 meter 39 ft tall cliffs along the east coast of the Yucatán Peninsula on the Caribbean Sea in the state of Quintana Roo, Mexico. Tulum was one of the last cities built and inhabited by the Maya; it was at its height between the 13th and 15th centuries and managed to survive about 70 years after the Spanish began occupying Mexico. Old World diseases brought by the Spanish settlers appear to have resulted in very high fatalities, disrupting the society, and eventually causing the city to be abandoned.

Aerial view of Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico. Asian tour leder dressed in a maya style.

Gran Cenote de Tulum in Yucatan Peninsula, Quintana Roo, Mexico. There are thousands of cenotes dotted all over Mexico���s Yucatan Peninsula, and their existence is as much a defining characteristic of the region as is the distinct geological feature from which they result. Once revered by the ancient Mayans as sacred wells, they are now magnets for tourists, adventurers, and explorers alike.

The Church and Nunnery at Chichen Itza Archaeological Site in Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

The Great Ball Court in the Mayan Ruins of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Stony stairs of tomb of the High Priest pyramid at Chichen Itza Archaeological Site in Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Portal Maya sculpture Mayan Gateway situated in Parque Fundadores by sculptor Jose Arturo Tavares in Playa del Carmen, Riviera Maya, Quintana Roo, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

Serpent head sculpture in Mayan Ruin of Chichen Itza Archaeological Site in Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

El Castillo, The Pyramid of Kukulkán, is the Most Popular Building in the UNESCO Mayan Ruin of Chichen Itza Archaeological Site Yucatan Peninsula, Quintana Roo, Caribbean Coast, Mexico

TRUPACT shipping containers used to transport radioactive waste are moved at the Waste Isolation Pilot Plant; nuclear waste from America's nuclear weapons program is shipped by truck from all over the country to be stored in rooms carved out of an ancient

Radioactive plutonium and americium waste from America's nuclear weapons program in TRUPACT shipping containers at the Waste Isolation Pilot Plant; nuclear waste is shipped by truck from all over the country to be stored in rooms carved out of an ancient

Containers filled with transuranic nuclear waste from America's nuclear weapons program await burial at the Waste Isolation Pilot Plant; the radioactive materials are then stored in rooms carved out of an ancient salt formation a half mile below the Chihu

Workers prepare transuranic nuclear waste from America's nuclear weapons program for long-term storage at the Waste Isolation Pilot Plant, here a fork lift moves a TRUPACT shipping container used to transport nuclear waste by truck from distant places.; t

Workers prepare transuranic nuclear waste from America's nuclear weapons program for long-term storage at the Waste Isolation Pilot Plant, here a worker checks radiation levels on the outside of storage containers because they are stored in rooms carved o

Holocaust memorial in Berlin, Germany

Knight's festival, Castle Oberkapfenberg, Kapfenberg, Styria, Austria

Holocaust memorial in Berlin, Germany

Brass tags are used to account for every person going underground at the Waste Isolation Pilot Plant, where radioactive waste from America's nuclear weapons program is stored in an ancient salt formation a half mile below, Carlsbad, New Mexico, USA

Castle Oberkapfenberg, Kapfenberg, Styria, Austria

Grass over a rock formation, Masada, Israel

Kilclooney Dolmen, County Donegal, Ireland

Stone Circle In A Country Field, Co Meath, Slieve Na Calliagh, Ireland

View of geometric patterns on rocky hills referred to as Brain Rocks, against a cloudy sky forming part of the alien landscape of amazing lines, contours and shapes in the wondrous area known as White Pocket, situated in Arizona, Arizona, United States of America

Surreal landscape of White Pocket with stormy clouds gathering overtop. They are comprised of swirling, multicolured Navajo Limestone with domes, hoodoos and potholes, Arizona, United States of America

Fish fossil is held in the palm of a hand. Some of the world's best preserved fossils are found in the Fossil Butte National Monument on flat-topped ridges of southwestern Wyoming's cold sagebrush desert. Discoveries from the ancient lake sediments the Eocene Green River Formation of Fossil Basin are world-renowned, Wyoming, United States of America

Woman standing under the large, boulders on the seaside shores of The Baths, a famous beach in the BVI's, Virgin Gorda, British Virgin Islands, Caribbean

View of the river and rock cliffs of The Narrows, Zion National Park, Utah, United States of America

Poulnabrone Dolmen, The Burren, County Clare, Ireland

Poulnabrone Dolmen, The Burren, County Clare, Ireland

Stunning view of the sandy beach with surf forming a zigzag pattern in the foam next to the large, boulders lining the shores at The Baths, a famous beach in the BVI's, Virgin Gorda, British Virgin Islands, Caribbean

Poulnabrone Dolmen, The Burren, County Clare, Ireland

Kilclooney Dolmen, County Donegal, Ireland

Poulnabrone Dolmen, The Burren, County Clare, Ireland

Proleek Dolmen, County Louth, Ireland, Near Ballymascanlan

Ireland, Stone Circle

Kealkill, County Cork, Ireland, Recumbent Stone Circle

Lauragh, Ring Of Beara. County Kerry, Ireland, Stone Circle

Ancient Poulnabrone Dolmen; County Clare, Ireland

Londranger Is An Ancient Sea Stack Along The Coast Of The Snaefellsness Peninsula, Iceland

County Cork, Ireland, Drombeg Stone Circle Near Glandore

Ancient Dolmen Ruins; Ballinskelligs, County Kerry, Ireland

Beaghmore Stone Circles, County Tyrone, Ireland

Ancient Megalithic Tomb, Poulnabrone Dolmen; Ballyvaghen, County Clare, Ireland

Ancient Poulnabrone Dolmen; County Clare, Ireland

County Cork, Ireland, Wedge Tomb

White House Ruin, Canyon De Chelly National Monument, Chinle, Arizona, Usa

Stone Circle

Utah, United States Of America; Indian Rock Art In Capitol Reef National Park

Ancient Dolmen Megalithic Tomb; Ardara, County Donegal, Ireland

Hawaii, Lanai, Garden of the Gods, pile of rocks silhouetted by dramatic sunset.

Ancient temple

Ancient temple