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

This unusual public park, which contains an eclectic mix of industrial remains from the 19th century, originated as an archaeological dig in the 1980s.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Opened in 1956, the first modern indoor shopping mall in the world was inspired by the shopping arcades found in European cities.

Each year, one talented artist puts on a show sculpting twelve butter-based busts of dairy princesses.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

An aptly-named street near the birthplace of the modern LGBT rights movement.

With a history dating back to Victorian times, this architectural gem is a rare New York tourist haunt worth visiting.

Dedicated to nine marines from Massachusetts who perished during the Beirut bombings.

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

Second largest wastewater treatment plant in the country.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

Replica of an old Esso filling station, complete with Wayne gravity pump and outhouse.

A Nessie-like monster supposedly lurks in this lake.

Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

Illegal drag racing two stories beneath Chicago’s streets.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.