Places Will Wants to Go

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

This peculiar border irregularity is the only way to legally enter Russia without a visa.

Man-made mineral caves house massive bat colony.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

An underground nightclub helped spark a "Singing Revolution."

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

"There's nothing there," and other lies the KGB told us.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

A former imperial sea-fortress and Soviet prison.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

Europe's official "zero-level," the equator of elevation.

Europe's first floating restaurant is home to a hilarious legend.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

One of Mexico's youngest major cities still holds on to this structure representing its short modern history.

Take a dip beneath the stalactites in this amazing cenote.

These azure waters were thought to lead to the Mayan Underworld.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Every equinox this Maya pyramid puts on a spooky ancient light show.

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

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

This collection of historical artifacts and tropical wildlife waits just beneath the surface of the water.

A glowing underwater cliff attracts marine life and divers in equal measure.

A massive maritime collision may have led to the myth of a resort island's strange financial status.

Send a postcard while vacationing with Satan.