Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

A celebrity from the late Cretaceous period.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

The world's oldest continuously operating airport was founded by the Wright Brothers.

This abandoned sea fort has become an accidental bird sanctuary.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

This grand gothic brewery has been pumping out suds for over a hundred years.

The first memorial dedicated solely to the Black troops who fought for the Union.

There’s a hidden military meme engraved on the World War II Memorial.

It was once the base for a series of domestic terror attacks.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This former asylum for Black Americans is haunted by its history of violence and racism.

Rumored to have tormented a family in the late 1960s, this toy now resides in a quiet little oddities shop.

A dollhouse full of taxidermy rodents, each one handcrafted and given a sordid past.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

A Maryland museum dedicated to Black history, housed in a historic church.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.