A hidden "place of interment for gentlemen."

A museum dedicated to the history and exploration of both popular music and science fiction.

Erotic art covers the walls of the largest ancient pleasure palace.

Christ's blood preserved in a Belgian town.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The land is home to swimming ponies and a legendary 18th-century treasure.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

An Irish Memorial commemorating those who perished due to potato blight.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

A layered tribute to the work of mosaicist Isaiah Zagar.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

The only electricity pylon under whose legs you can go by boat.

Granting the right of way to ships over surface traffic since 1917.

A walk through the historic city center, under the streets of Seattle.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

A wall of chewing gum moonlights as collective art.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.