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

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

Elevated freight railway turned wildly successful urban park.

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

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Like Mars, but much closer.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

The statues commemorate the legendary mass killing of escaped circus monkeys.

A vision of beautiful Hindu architecture in the middle of the American South.

Bad farming practices caused this unnatural natural wonder.

The only subterranean ping pong table in Atlanta.

A colorful square marks the heart of the city's LGBTQ community.

An underground magnet for ever-changing street art.

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Eighty million natural history specimens call this gargantuan museum home.

A student driver's nightmare.

Banksy gives themself artistic license with this piece of London street art.

Hear the quietest sound from across the dome.

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

This cemetery features modernist statues as strange as its name.

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

A psychological self-portrait in the form of a giant, segmented head.