A series of fish plaques that are embedded in the malls of Ocean Parkway.

The oldest continuously operating fish market in the United States.

Home to items never before seen by the public.

This Federal-style plantation house was once visited by Abraham Lincoln to meet with generals during the Civil War.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A psychedelic labyrinth on the San Francisco bay.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A huge musical instrument played by the ocean.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The last early 20th-century schoolhouse in Fairfax County has galvanized the community and engendered a spirit of service among residents.

This local mascot has been a presence in the area since the 1960s.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

The only surviving 19th-century water-powered mill found in the Washington, D.C. area.

The most historic church in Fairfax County played a role in the creation of the American Red Cross.

In 1889, a small group of women began meeting to discuss literature, art, and other topics. Their every-other-week salon grew into a lending library that still exists today.

Exact replica of the ancient monument, but much, much lighter.