Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A psychedelic labyrinth on the San Francisco bay.

In the middle of Calvary Cemetery stands this singular memorial to a small boy who died too young.

A small Chicago museum filled with thousands of preserved butterflies, beetles, and more.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

A collection of haunted objects and macabre oddities under one roof.

The best Tiki bar in Las Vegas.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

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

The Devil’s own choice when he needs a drink in Brussels.

Lavish royal estate punctuated with heated greenhouses.

A huge old mansion full of thousands of toys, each there to be used and played with.

Drink among marionettes at this pub inside a historic puppet theater.