Commonly referred to as the most photographed Victorian home in the United States.

Folk art crafted from discarded vegetable crates.

The largest permanent Monopoly board makes one of the longest games even bigger.

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

A dazzling display of lights and crystals.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

Site of the first radio and telephone broadcasting companies in Copenhagen.