Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This nine-story building can be played like an instrument.

The walls of the iconic dome are hollow and have a secret stairway.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

A white oak with property rights.

Meet manatees face-to-face at this zoo for native species.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

There aren't too many operational funiculars around, but Pittsburgh has two!

A motel dedicated to Southwestern nostalgia.

Yo, Adrian!

The site of Paul Revere's historic two lantern warning.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The land is home to swimming ponies and a legendary 18th-century treasure.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

The highest point in Washington state is a volcano covered in glaciers.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

A spiritual vortex among the red rocks in Sedona.