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

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Underneath one of the region's most historic roads lies the home of Plato's successor.

This building was once the most magnificent mansion in Nafplio.

A brutalist gem towering over the heart of Milan.

From a distance, this structure looks like an ordinary office building but a closer inspection reveals a unique facade.

This ornate Weser Renaissance house was also the home of an infamous witch hunter.

This unique architectural wonder is home to luxury apartments.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

The former headquarters of history's oldest megacorporation.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

This 400-year-old house tells a tale of witchcraft and woodwork.

One of London's oldest houses contains a mixture of both old and modern features.

This iconic building was founded as a school for the impoverished, but became one for the sons of the local gentry.

An ornate doorway leads to the former site of one of the city's oldest society of merchants.

Amidst towering office buildings, a local pub lives inside Sheffield’s oldest surviving domestic building.

This Grade II Listed Building with an Art Nouveau façade once contained a unique print shop.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

Built in 1906, this unique building was the first Hindu temple in the United States.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

This home is steeped in history from, George Washington to George Corwin, High Sheriff during the Salem Witch Trials.

This eclectic homestead is home to a miniature windmill and Connecticut's last tollbooth.

This unusual apartment building may be Brooklyn's own version of the Leaning Tower of Pisa.

A rural colonial settlement that contains the remains of a store and cooper.