Few people have ever heard of, let alone visited, one of Turkmenistan’s most impressive natural attractions.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.

The taxidermied remains of a once-great parrot.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A perfectly preserved hill village where the buildings are painted like white lace.

Too much gossip or just missing curfew could land you in here for a couple of days.

The world's newest astronomical clock is also its most accurate.

These pools have been abandoned for over 20 years.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

A hidden art gallery in an abandoned Warsaw fort.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

A 20th-century picture show in 3-D.

A famed data visualizer's personal sculpture garden is a landscape of modern and megalithic wonders.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

A tiny memorial for the year the Connecticut River almost destroyed New England.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

This museum promotes informed contraception by documenting its often secret past.

Op-art architecture designed for happiness.

The resting place for anonymous victims of the Danube's dark waters.

The topiary maze at the Habsburg hunting lodge.

Macabre museum devoted to historical Viennese murders.