Home to items never before seen by the public.

Architectureal fantasy quarter of Rome.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A winding path built in secret on the edge of the continent.

The sign at the garden gate reads: "These Plants Can Kill."

A floating cat sanctuary on an Amsterdam canal.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The only rotating bar in New Orleans has been slowly spinning since 1949.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Two stunning 17th-century libraries and a cabinet of curiosities.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Eighteen miniature death-scene dioramas.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An emporium for the weird, creepy, rare, and just plain gross.

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

This shop for all your super spy needs hides an educational secret.

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