A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

Thousands of tiny squares in different colors make up this piece of street art.

This tiny man looms large over downtown Charleston.

A giant open-air sculpture made of over 200 full-sized boats.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

This 1960s kinetic artwork has been restored and is once again whirling away in downtown Minneapolis.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The world's largest wooden structure.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

A towering bronze statue memorializes the founding father of postwar American conservatism.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A statue representing a lost Roman profession that was vandalized for centuries.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A massive marble foot is tucked away in a small alley near the Pantheon.

Plaques on its facade commemorate the Tiber's most destructive deluges.