This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

This one-room cabin where the young colonel slept during the French and Indian War.

The whole world in one water tank.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

Built by the patriotic residents of Boonsboro in a single day.

A remote horde of architectural treasures fit for Indiana Jones.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

An abandoned church gets a second life as a massive beer hall and event space.

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

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

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

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The trials and tribulations of marking Poe's grave.

At the end of a street is a statue with no indication as to why it was created.

War prevented this Polish composer's body from being returned to his home country for 51 years. Though his ashes eventually made it home, his heart stayed behind.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.

Political activist and writer Thomas Paine once lodged at this location.