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

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

Drink wine handed out through a window as part of an age-old tradition.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

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

An alchemist's "magic door" stands in the middle of a Roman park.

The oldest remaining theatre in New South Wales.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

Roadside Americana, fairy tale characters, and Austin quirkiness come together at this magical course in the heart of Texas' capital city.

A small island hides in plain sight on Austin's Lady Bird Lake.

World War II ended before these tunnels built to protect vital oil from Japanese bombs were ever used.

Enjoy all the trappings from 1912 aboard this Titanic-themed restaurant.

Victoria's largest salt lake is a favorite haunt for photographers and stargazers.

A historic hotel on the edge of the Australian outback.

These tracks are believed to be from a panicked dinosaur stampede.

This once-booming gold mining hub was basically abandoned overnight.

An ancient engraving by the Cammeraygal people was uncovered in the transformation of a North Sydney industrial site.

An ancient rock engraving shows Aboriginals used their advanced knowledge of the stars to hunt and gather.

Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

Rainforest filled with record-holding eucalyptus.

Australia's largest traditional hedge maze features a Great Gnome Hunt.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

An abandoned railroad tunnel is now filled with bioluminescent bugs.