Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

The world's oldest soul food restaurant is also one of its best.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

A secret greenspace hides atop a Capitol parking garage.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

Art deco landmark on the outskirts of Washington, D.C.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

This lovely pocket park is one of the most under appreciated in D.C.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

Home to a vast and influential collection of Shakespeareana.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

There's a crumbling old mansion inside the Smithsonian National Zoo.

An Industrial Revolution-era public work that purified water using nothing but sand.

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

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Couple's personal collection of pinball machines turned public pinball museum.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

An arcade packed with a rotating collection of unique independent video games.

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

Make a tough dinner decision: Octopus wasabi roulette or bull penis?