Washed out by the Johnstown Flood in 1889, the surviving portion of the original two-span bridge now resides at Fishing Creek.

This hidden treasure provides a charming access point along the south side of Baker Park.

The smallest covered bridge in Maryland.

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A relic of FDR's brief foray into utopian urban planning.

The ruins of an 18th-century mansion that was once named "Mistake" by the man who had it built.

The headquarters of the Audubon Naturalist Society is a small slice of heaven for nature lovers.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

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

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

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

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.

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

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

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

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