An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

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

This hidden green space is the city's second largest conservatory.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Catacombs turned marketplace.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

The dream home of an iconoclastic renaissance man still stands as a monument to his domestically mundane vision.

The magic's in the hole!

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

Taking the 3D art experience far beyond blue and red glasses.

This Portland Art gallery doubles as a studio that supports adults with intellectual and developmental disabilities.

This Portland shop is brimming with natural wonders, local art, and handmade goods fashioned from recycled materials.

Hundreds of handmade critters fill this tiny window gallery in the heart of Portland's Alberta Arts District.

Entering this curiosity shop is like stepping into a mad scientist's lab.

This sandstone mansion was the home of two of Oregon's most important pioneers.