A patch of contaminated land reclaimed as a scrappy sculptural oasis.

Every year, the colorful murals of Montreal get a complete makeover.

The falls were named for the mistaken idea that they were the ones pictured on the Canadian $5 bill.

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

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

The middle finger of modernity.

An enigmatic modern marker left next to a historic Roman site.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

The final resting place of the poets Shelley and Keats.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

2300-year-old Roman road connecting the empire.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Ruins of a 10th century church tucked away deep in a botanical garden.

Over 80,000 carved wood blocks make up one of the world's oldest intact Buddhist canons.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

This one-time health resort was used by aristocrats around the world.

Op-art architecture designed for happiness.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.