What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

An extensive collection of fine art devoted to man's best friend.

Community bookshelf of 25-foot-tall book spines.

This abandoned prison castle has become an imposing gallery of graffiti art.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

There's a crumbling old mansion inside the Smithsonian National Zoo.

People escaping slavery may have hidden inside a corpse vault.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

This grand gothic brewery has been pumping out suds for over a hundred years.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

An academy where anyone can train in the exciting acrobatic sports of parkour and freerunning.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

An oddities shop that dabbles in the deathly and beautiful.