This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

A symbol of Texas pride.

This sculpture of a bowler hat is complemented by a matching umbrella a few blocks away.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

A medieval castle in the middle of rural Texas.

255 feet of suds, scrubbers, and blow dryers.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.

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

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

An overlooked memorial honoring the local Washington residents who died in World War I.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

There’s a special club house at the top for the bell ringers.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

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

Largest Roman Catholic church in North America.

The most decorated dog of World War I is preserved in the Smithsonian.

When it opened during the final years of the embargo, all the drinks and cigars were free.