This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

Remnants of a storybook amusement park hidden behind a strip mall.

This statue honors the author's groundbreaking family story.

First built around 1848, this bridge was destroyed by arson, but original timbers are included in the replacement.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

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

The smallest covered bridge in Maryland.

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

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

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.

One of the only memorials dedicated to journalists who died in combat.

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

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

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

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

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