This 15th-century mosque is a beautiful blend of Hindu and Islamic architecture.

This 16th-century mosque is the hallmark of the African architectural legacy in India.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Art and a pun, all in one.

A fascinating insight into daily life in the Eastern Bloc.

The most visited, and possibly most controversial, museum in Germany.

An ancient burial ground believed to have been used for ritual sacrifice.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

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

A mysterious stone embedded at the base of a historic Boston building.

The massive machine creates cracking displays of indoor lightning.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A men’s restroom became a sandwich shop.

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

Ice cream stand, snack bar, and time capsule of milk conveyance.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.