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

A fantastical bed and breakfast with magically unique rooms.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Monumental paintings, discovered in a Mexican cathedral in 1957, depict the deaths of some friars in Japan.

The former headquarters of a leader in the Mexican Revolution, and the site of an often-reproduced image.

The conquistador's former fortress is the oldest preserved colonial building in the Americas.

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The indecision over what to place in this square was immortalized with a plaque.

These ancient rune stones plucked from the countryside now call this university park home.

A living descendant of the famous tree that helped Isaac Newton develop the theory of gravity.

A modern, secular take on a traditional Virgin Mary motif.

Home to 200 plaster casts of Scandinavian proboscises.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

Ruins of an American Civil War iron forge still survive today.

The childhood home of the famous general's mother is now a small, walled garden.

This tiny chapel next to a highway provides weary travelers a place to rest, pray, or maybe even get married.

Artisans have been gathering in North Carolina since 1989 to show off whimsical takes on an everyday item.

A museum dedicated exclusively to aircraft used in the military.

The eerie ruins of a remote abandoned hamlet said to be founded by the survivors of a shipwreck.

This research center for rare prosimians is studying how they sleep to help prolong human life.

A folk art mecca famous among outsider art fans.