This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

The flagship building of an early national restaurant chain is a superb example of terra cotta art.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

New York's southernmost subway station is whimsically wavy.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Try not to get slimed in Tribeca.

A popular European tradition makes its way to the states on one of America's most famous bridges.

New York City's smallest piece of private property.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The "Prussian Versailles" that is as glorious today as when it was built.

Metro station with a claim to rock n' roll fame.

Berlin's old airport.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A very classy 1920s-era bar right in Grand Central Station.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Week-long block party becomes a competition for the best decorated street.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.