The only Bahá'í house of worship in North America and one of only a handful worldwide.

A Bibliophile's Dream.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This chimerical bridge/tunnel appears to dead end right into the sea.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Notorious artist squat renovated into legal studios.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Two stunning 17th-century libraries and a cabinet of curiosities.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.