The vast, legendary catacombs hold secrets much stranger than stacked bones.

A hugely vast Irish landscape of barren rock that stretches for miles.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

The unbelievably opulent home built for an infamous newspaperman.

Japan's largest and oldest annual procession of floats, begun in 869.

This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Like Mardi Gras, only everyone's a pirate.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

A massive underwater sinkhole made famous by Jacques Cousteau.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

This small primate research island is teeming with playing, fighting wild monkeys.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.