A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A small cell adjacent to this church was once the bedroom for a renowned saint.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

One of the last remaining movie theatres in the country that features a rear-projection system.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

A museum chronicling pioneer life constructed over Interstate 80.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

This little gem of a museum is a hidden jewel filled with prehistoric treasures.

A miniature baseball stadium honoring Johnny Rosenblatt Stadium, home of the College World Series from 1950-2010.

This once rural mansion now sits in the heart of the city.

A museum dedicated to the history and exploration of both popular music and science fiction.

Where else would a linchpin of post-colonial Native American cuisine anchor the menu but a museum?

Leave a button on the jacket of this iconic Seattle clown.

A nondescript Seattle restaurant inherited a piece of European history.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A giant Troll lurks under one of Seattle's oldest bridges.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

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

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

One of its engravings is believed to be among the first representations of medical and surgical instruments.

The largest known Ancient Egyptian obelisk.

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.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.