Century-old shop, specializing in Occult products.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

A rare view of a preserved Victorian science museum.

The first American department store, and home to the largest operating musical instrument in the world.

Step into a pastel time capsule where candy is truly dandy.

One of the last free public hot springs is decorated with hippie art.

Perhaps the most unique of any Frank Gehry design for one simple reason: Gehry himself actually lives here.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Thousands of turbines whir at at the origin of North American wind power.

This bomb shelter-themed bar has barely changed since it opened.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

An old tram depot transformed into a vintage car paradise.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Puppet theater and museum holding a collection of more than 300.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A sweet museum focused on beets.

A wunderkammer of mysterious objects and stories.

A kaleidoscopic warehouse-maze of handmade neon signs.