This 1830s store is believed to be the site of Harriet Tubman's first stand.

The whole world in one water tank.

Two dozen pinball games hidden away inside a most unlikely location.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

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

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

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

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

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

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

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.