A controversial memorial at the place where Captain Cook met his violent end.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

Luxurious devotion and 500,000 images of Buddha in Myanmar.

This blowhole is supposedly caused by a trapped monster.

An eclectic mix of influences rot together in harmony in this India necropolis.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A sprawling nature preserve harbors the world's only living dragons.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

One of the largest caves in the world open to the public.

This famous city eluded concrete detection until the early 2000's.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

The rocky remains of an ancient Greek forest.

Temple complex that once housed the famous statue of Nike.

The bomb-ravaged remains of of a colossal Neptune.

Stalactites and stalagmites in a beautifully lit cave.

This famous archeological mystery may be an ancient example of movable type.

These Nubian pyramids are strange and unique, even by pyramid standards.

The ancient latrines of the Greeks, in all their public glory.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Giant marble phalluses on the sacred island of antiquity.

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

The central mosque of this Mali town is entirely built from mud.

Ozymandias’ time-keeping temple.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.