The "Sultan of Swat" once attended a school at the site of this baseball field.

Near the summit of Mount Washington, a stone monument remembers a life lost to one of the mountain's infamous storms.

Featuring the the longest lift span of any vertical-lift bridge in the world.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

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

A portal into the bricked up canal that runs through the heart of Washington D.C.

A building shaped like the Army Corps of Engineers logo, because why not?

A secret greenspace hides atop a Capitol parking garage.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

A painfully obvious spy house sits right across the street from the Russian Embassy.

This tiny, one-acre cemetery serves as a reminder of when the Civil War got close to the nation’s capitol.

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

Amid the hustle and bustle of Miami’s Financial District sits a mausoleum-turned-monument.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

A small Richmond island dotted with the remnants of hundreds of years of history.