The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

A swing to dangle you off the very edge.

A fiery crater has been burning in the Karakum Desert since 1971.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Olfactory delights in San Francisco's Botanical Gardens.

A hotel and restaurant serving as the mecca of kitsch.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

A 30-acre garden inspired by the principles of modern physics.

The first declared National Monument in the United States.

Started as a kitchen garden, now the second largest botanical garden in the world.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A museum of carnival attractions where you are invited to ride the rides.

Paris' linguistic guide to the international language of, yes, love.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

An Australian lake whose pink hue defies scientific explanation.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.