Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

The actor best known for slapstick comedy is memorialized in his home town.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

This Georgian-style house built in 1746 is the oldest surviving structure in Bladensburg.

George Washington once stopped by this house for dinner.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A much-maligned monument to teetotalism.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The tunnel under the Capitol Building where Congress takes out its trash.

A historic arena where the Beatles played their first concert in the U.S.

This university transit system is a 1970's vision of the future.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

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

This former coal gasification plant found a curious second life as a popular public park.