A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Elevated freight railway turned wildly successful urban park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

This replica of an 8th century burial ship actually sailed to Norway before returning home to Minnesota.

A layered tribute to the work of mosaicist Isaiah Zagar.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

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

Dr Barnes' $25 billion private collection of art and arboretum.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

Teddy Roosevelt’s famous “midnight ride to the presidency" started at this small lake high up in the Adirondacks.

A unique collection of Science Fiction, Fantasy, and everything in-between.

A comedy troupe's collection of bizarre humor.

Strange physical sensations and optical contradictions keep visitors coming back for more.

The first green space constructed on an elevated viaduct.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

An odd museum dedicated to French fakes.

This Parisian café sticks almost exclusively to an ethos of reuse.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.