Home to the world's oldest functioning orrery.

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

An impressive array of unique homemade planetariums.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

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

See just what life was like in a 19th-century prospecting town.

The ghostly remains of what was once the world's richest copper mine.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

This remote fort on the Yukon River is a vestige of the wild Alaska gold rush.

When he found his hometown was no more, Lowell Davis decided to recreate a "new" ghost town from scratch.

An abandoned town is hidden in Great Smoky Mountains National Park.

A lawless town deep in Death Valley was famous for its riches and death rate.

This ramshackle ghost town is comprised of mining-era buildings collected from around the region.

In the early 1900s, hundreds of Black Americans found opportunity in this now-abandoned rural community.

This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.

The only boathouse Frank Lloyd Wright ever designed was also the only unbuilt structure in his famous Wasmuth Portfolio, until 2007.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

Less so a museum and more a library for hardcore Japanophiles.

Rome is now home to a stunning food museum and library.

A bronze statue commemorating his royal meowjesty, Toulouse.