With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

An annual extravaganza of Broadway theater memorabilia.

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

Take a cruise with no movement but plenty of style in this one-of-a-kind boat mall.

Venture into the hideout of one of Hong Kong's legendary pirates.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

Time-frozen department store of dangerous and dusty relics.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.