A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Mysterious rocks that ring musically when struck.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

An outlandish shoe shaped house built by an eccentric millionaire.

This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.

Overshadowed by quilts, the artistry of these patterned textiles went underappreciated for too long.

Built in the 1970s, this curious modular home found new life as a sundae-shaped ice cream stand.

Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

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

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

Here be dragons.

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

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

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

These flying foxes dangle from the trees around the library like fuzzy black fruit.