On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

Rumors and legends of secret Nazi activities surround this eerily remote island mansion.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

This abandoned five-star hotel is now a five-star urban exploration destination.

Strange secondhand shop showcasing taxidermy and oddies

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

Catholics make up 84% of Ireland's population but this Dublin museum remembers the small but important Jewish community.

Experience what life was like in Ireland during the Viking and medieval ages.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The oldest public library in Ireland.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Naturally preserved bodies are eerily staged throughout the crypt in varying poses.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This small condiment museum makes all manner of mustards with a 200-year-old mill.