Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The largest and most famous wax anatomical collection anywhere in the world.

Secret refuge and museum of the Duke of Florence.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

The oldest operating pharmacy in the world features 800-year-old recipes.

The middle finger of modernity.

This demon atop the Notre-Dame de Paris looks utterly bored.

Less a museum than a bizarre fantasy world created by artists and engineers.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

If astronomy had a ghost, it would look like this observatory.

One-layer pyramid in Indiana.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Ornate limestone building now filled with geologic specimens, and more.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

This zombie-themed restaurant stands out in the heart of corn country.

The vanishing remains of an old water station from the late 19th century.