Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

Once the largest trading firm of enslaved people in the U.S., this building is now a museum that preserves Alexandria's dark past.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

A much-maligned monument to teetotalism.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Rare videos and memorabilia await visitors inside this unique store.

An idyllic mineral hot springs facility with a more-than checkered past.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

This historic, one-acre island is the only legal place to camp in the city of Richmond.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

This vast kitty-themed collection illustrates the history of human-cat interaction.

Tour the sci-fi-esque reality of governmental disease management.

An abandoned stretch of highway, deteriorating next to the operational one.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The scant remains of this flooded historic village can be explored in one of the most remote areas of the Great Smokies.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

This experiment in the lifespan of seeds will take a century before it is complete.

This former open-pit manganese mine is now a massive graffiti canvas.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

One man's homage to the orange as realized through a long-term folk art labor of love.

An oversized metal construction of Billy Tripp's moods going through life.