A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

This popular cave pool is truly magical, despite the crowds.

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.

Hidden behind a YMCA stands the remains of a ceremonial site that dates back hundreds of years, whose ground is still considered sacred to many Hawaiians.

These winged Maya figures are the subject of speculation and conspiracies.

Bouncing, delightful, mechanical art at the MIT Museum.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Ride the subways of yesteryear.

Less a museum than a bizarre fantasy world created by artists and engineers.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

Home to a protest movement, a bombing, and a dramatic change in labor history.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.