A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

Housed in a Japanese colonial-era bank, this cafe pours next-level cold brew.

For over two centuries, this palace served as a residence for the Holy Roman Inquisition's leaders, a courthouse, and a prison.

Shakespeare has been brought to life in this open air theater for the better part of a century.

These natural hot springs form four-tiered soaking pools with temperatures ranging from 85 to 115 degrees Fahrenheit.

A local prank turned town icon.

This unassuming bridge is most likely one of Michelangelo's unfinished masterworks.

This historical font became infamous after a maid was allegedly tricked into urinating in it, leading to her tragic death sentence.

From printing money to live music, this Beaux-Arts style building has had many identities over the last century.

The Museum of the Forum of Caesar Augusta showcases the city's ancient Roman sewage system.

After sitting abandoned for decades, this historic mine is now the only publicly accessible chalk room and pillar mine in North America.

A colossal statue of a woman hugging a modern building.

This little-known wall in Southampton stands as one of the most unique and personal monuments to D-Day.

An unexpected alley with light shows and nature views.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

This rural Australian restaurant claims to be the only restaurant in the world to be built almost entirely of sea shells.

A glimpse into life in 1830s Tokyo, back during the heyday of the Tokugawa shogunate.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

The darkest building on Earth was built for the snow-white scenery of the 2018 Winter Olympics.

A Guinness World Record-holding social enterprise whose shows don't shy away from heavy themes.

A luxury hotel constructed out of a former jail.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.