A glimpse into the festive and private lives of medieval Europe.

Amsterdam's Red Light District leaves little to the imagination.

Europe's official "zero-level," the equator of elevation.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This unusual elevator doesn’t stop or slow down.

This subterranean studio is filled with fascinating kinetic art.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

A floating cat sanctuary on an Amsterdam canal.

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

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

The massive white mound and accompanying water terraces are a striking geological oddity.

Inside the Šomoška National Nature Reserve exists a unique rock formation rarely seen in the world.

A semi-scholarly approach to sex.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

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

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

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

A psychological self-portrait in the form of a giant, segmented head.

A spherical "micro-nation" in the heart of Vienna.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.