The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

The Flatiron Building's storied West Coast cousin is a lot more into religion.

Designed by Gustave Eiffel before his famed tower.

Kissing the ass of this stone lioness has become a rite of passage in the city of Girona.

This massive boulder was hurled into a Zurich church when a gunpowder depot was struck by lightning in 1652.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A brutalist gem towering over the heart of Milan.

The mark of the Devil's horns on a marble column in Milan.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

Unconventional site where the tracks of Zurich tramcars intersect.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This 13th century Gothic brick castle is the largest in the world by surface area.

In northeastern Poland, the ruins of a massive granary overlook the Narew River.

The majority of the highest mountain in Poland is actually located in a different country.