Inside the dome of this gigantic, Saturn-shaped building is one of the largest planetariums in Asia.

A delightful but little-known public observatory and planetarium in Munich.

This 19th-century shopping arcade has charming, unusual stores like a luthier workshop and even the local Esperanto Association.

A small museum that celebrates the history and culture of the LGBTQ community in England.

These 100-year-old tunnels in downtown Provo house artists, restaurants, and a few surprises.

This unique museum focuses on the Siege of Sarajevo through children's eyes.

A look into the life of a Victorian-era prisoner.

Cathedral-like Victorian vaults are hidden within this iconic bridge.

This wooden mosque is one of the few remnants of medieval Poland's Muslim Tatar community in this deeply Catholic country.

Fuel your honky-tonking with this venue's unbeatable “Recession Special.”

A lonely chimpanzee lures you into a narrow alley leading to this hidden shrine.

Ancient site of Mongolian Shamanism located near a road leading out of Ulaanbaatar.

Experience the magic (and science) of a camera with this giant structure that allows you to enter inside the camera.

A limestone grotto where daylight filters in from below and turns the water a beautiful turquoise. Also home to a small underwater nativity scene.

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

Visit a secretive crypt before it crumbles to dust.

In an effort to escape the horrors of slavery, one man mailed himself to freedom.

The center of this Polish border town was so thoroughly wiped out in World War II that only the foundations remain.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

The Man In Black grew up in a large agrarian community established by the federal government in the Great Depression.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.