The skeletal white beams stand as a monument to religious dissent.

This might just be the TARDIS of bookstores.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

A bunker "with enough U.S. currency to replenish the cash supply east of the Mississippi" in the event of nuclear war now protects nitrate film.

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

An overgrown garden stands as a grim marker of an unrealized dream.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Eighteen miniature death-scene dioramas.

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

A priceless collection of the Nation's cryptologic history.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

This free, take-a-book shop seems like a trick but isn't.

One of the largest collections of Catalan literature and cultural materials outside of Spain, created by a community of 1960s expats.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

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