A Memphis park where you can walk the whole Mississippi River in one go.

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

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.

The first park built over a freeway is a brutalist masterwork.

This former coal gasification plant found a curious second life as a popular public park.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A giant Troll lurks under one of Seattle's oldest bridges.

The world's largest fully steerable radio telescope.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

"Where the ducks walk on fish."

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

Could it have picked a better place to land?

10,500 square feet of pinball housed in former dollar store and home to the last playable "Thunderball."

Nothing says indulgence like a 1,500-pound chocolate castle.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.