The Virginia home of one of the signers of the Declaration of Independence is being preserved with a unique glass facade.

A diorama of the Civil War, fought by cats.

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

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

Bizarre Cavern.

Built by the patriotic residents of Boonsboro in a single day.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

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

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Walk through the history of American pop culture.

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

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

Remnants of a storybook amusement park hidden behind a strip mall.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

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

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

This golfball sized platinum iridium cylinder is the official starting point for all national weight calibrations

Where pardoned turkeys once spent their all-too-brief final days.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This suburban house is made of dirt, and almost sparked a revolution in home construction.

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