Minnesota's oldest and deepest mine is now an underground physics laboratory.

Hub of Scandinavian culture in a Minneapolis deli.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

A museum dedicated to the exploring past, present, and future innovations.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

A butcher shop in Minneapolis has all the meats and cheeses you’d expect from any of its kind—except that all the products are vegan.

An unusual assortment of art, furniture, and other curiosities.

Funhouse of found art and participatory sculpture.

These curious caverns have been home to mushrooms, gangsters, and disco.

A museum within a museum, devoted to history's most questionable medical devices.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

Half of a waterfall goes into the river while the other half seems to disappear.

This large midwestern cavern features impressive rock formations and an underground waterfall.

This Byzantine Church was moved from Paris to Athens block by block.

This Ottoman-era church is hidden amid a busy tourist area.

The only ancient site that remains on the south bank of the sacred Ilissos river.

According to legend, this ancient column contains healing properties.

These caves secretly held national treasures during World War II.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

Artists have long been drawn to these atmospheric 12th-century ruins.

Where the rules of that most quintessentially English game were first devised by an eccentric inventor.

A museum based on the collection of a Victorian family. Housed in a remaining Victorian villa.

This ornate English estates "Prodigy House" still bears the cannonball marks of civil war.

A hidden gem in the middle of the city's infamous Jewelry Quarter.