After years of being casually peed on by humans, this tree is peeing back.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

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.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

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

The only monument to name all of the passengers and crew who died on the RMS Titanic.

A replica memorializes the site where women were punished after the last witchcraft trial in Ireland.

A Victorian marvel of engineering is now a 21st-century tourist attraction.

Clusters of abandoned buildings hint at the facility's 144-year history with psychiatric health.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.