This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

A swing to dangle you off the very edge.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

Bermuda triangle lighthouse, site of mysterious disappearances, left to crumble into the Atlantic.

In a time before lifeguards, this house was a sanctuary for the shipwrecked.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

This underground oasis is one of North America’s most fascinating prehistoric places—and you can scuba dive in it.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

This tiny museum's sizable collection is jammed into a former underground public toilet.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.