The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

A swimming hole in the historic industrial quarry that supplied the marble for the Baltimore Washington Monument.

A historic cemetery filled with quirky faux wood art and unique tombstones.

The United States' oldest Episcopal church still in active use.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

The world's oldest continuously operating airport was founded by the Wright Brothers.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

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

Once America's tallest structure, now a Baltimore landmark.

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

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

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

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

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