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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The final resting place of New Orleans' most famous voodoo priestess.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

This Pringle-shaped ledge makes for the perfect photo op.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This historic tower in the California desert promises visitors a "vortex of good vibes".

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Concrete strongholds stand guard over the Golden Gate.

A fantastic castle rumored to be the birthplace of King Arthur.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.