The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

A sculpture of a salmon swimming through a brick building.

Portlandia is the second-largest copper repoussé statue in the United States.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

A Hawaiian stairway to heaven—that you can't climb.

Race through the maze, get your name on the sign.

Three nine-foot-tall bathing beauties perched elegantly on life-rings welcome visitors to the Alki waterfront.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

These unusual rooms on wheels are holdovers from the 1960s.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

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.

Washington's iconic carousel has a nice piece of Civil Rights history.

The oldest continuously operating fish market in the United States.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

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.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.