Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This replica of a historic fishing shack long dubbed the most painted building in America.

Millions of numbers carved in glass represent the tattoos forced upon victims.

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

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

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

Slyly buy a shake in the Parker Meridien lobby.

Elevated freight railway turned wildly successful urban park.

An unknown Hall of Fame in Jackson, Tennessee.

Trek up to an abandoned fire lookout from the 1930s for an unimpeded view.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

A 70-foot replica of the famed Eiffel Tower.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

This replica of the Greek structure is in the heart of Nashville.

What is it about mushrooms that makes people wish they lived inside of them?