The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Part shoe store, part sociopolitical art gallery, part zoo.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

An abandoned outdoor movie theater in the Sinai desert.

An alien landscape of chalk-rock in the Egyptian desert.

One of the most well-preserved temples of ancient Egypt.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

This ambiguous pig shrine is actually a monument to a beloved queen.

You'll never meet anyone this passionate about elephant droppings.

A mile-long navigable cave adorned with stalactites and stalagmites reaching up to 65 feet tall.

A phallic shrine to a princess goddess in Krabi, Thailand.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

Its tremendous toad is actually a five-story museum and viewing platform.

A Buddhist shrine in a cave protected by macaques next to dark passages lined with creepy paintings.