This elaborate towering structure was once famed for its revolutionary height.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

The final resting place of the poets Shelley and Keats.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

One of the world's largest collections of pharmaceutical artifacts.

This artistic fountain display pays homage to this area's theatrical history.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

A 19th century bank turned into a 6-story immersive art experience.

Step into a pastel time capsule where candy is truly dandy.

A layered tribute to the work of mosaicist Isaiah Zagar.

The first American department store, and home to the largest operating musical instrument in the world.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A 13th-century Swiss castle houses a collection of artifacts from the Polish diaspora.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

Hidden in the garden of physicist Erwin Schrödinger's house is a life-size figure of a cat from his famous thought experiment.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

A giant coin serves as a very unusual yet creative monument commemorating one of the most important people in the history of Trieste.