The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A former pillar of the Black community in Ellicott City.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

Two dozen pinball games hidden away inside a most unlikely location.

A brass and marble scale model of the solar system embedded in the concrete.

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

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

Built in 1945, this historic train station has a new lease on life with its baggage area serving as an event space.

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

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

A tiny piece of the Moon is embedded in this stained glass masterpiece.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

Once America's tallest structure, now a Baltimore landmark.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

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

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

FDR's Art Deco hospital tower was hopelessly inefficient.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

Impossibly life-like natural history models created out of glass by a father and son.

A monument marks where a convent was burned by an anti-Catholic mob in 1834.