Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The summer home of the largest colony of bats in the world.

This massive boulder was hurled into a Zurich church when a gunpowder depot was struck by lightning in 1652.

The culture that built these Tanzanian ruins displayed advanced knowledge of irrigation technology before mysteriously disappearing.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

The site of a devastating modern-day mud volcano eruption that buried parts of a village.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

Did Inca children also slide down these smooth rocky slopes above Cusco?

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

An Inca spa, military outpost or maybe… both?

This nugget of paradise earned its name for obvious reasons.

A phallic shrine to a princess goddess in Krabi, Thailand.

Monkeys lounge around at this 13th century temple.

One of Ayutthaya’s most iconic locations is a mysterious, hauntingly surreal miracle.

A meditative walk up 353 stairs leads to a majestic white Buddha overlooking Pai.

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

Buddha shrines hide within dark tunnels at this unique forest temple.

You can walk up Thailand’s naturally non-slip waterfall.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This research center for rare prosimians is studying how they sleep to help prolong human life.

These markers are used to document elevation changes around the famed dam.

A lovely park home with a few interesting guests.