This small chapel is built of human bones and decorated with a golden skeleton.

The oldest tavern in Lowell has dedicated fans of its fan.

Like stepping into a spooky fairy-tale, this shop carries the dark ideas of artists and other makers.

The mansion and cenotaph of the New Hampshire Faust.

The crypt under this cemetery's chapel was used as a meeting place by Filipino revolutionaries.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

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

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

A much-maligned monument to teetotalism.

The oldest continuously operating fish market in the United States.

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.

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

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

When it opened during the final years of the embargo, all the drinks and cigars were free.

The district's only illusionarium supports free writing programs for local students with every purchase.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The house where John Wilkes Booth conspired with his co-conspirators.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Look closely and you’ll notice that the color changes a third of the way up the tower.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

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