The only place for a truly presidential dram.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

This museum explores the grim reality of life in the earliest British colonies in America.

At 207 feet, one of the world's longest continuous escalators.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

The narrowest house in America is seven feet of pure spite.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Concerned residents saved this historic house and garden from demolition.

An old pay phone rewired to play local bird calls and songs at the press of a button.

Built in 1945, this historic train station has a new lease on life with its baggage area serving as an event space.

This general store has stood in the same spot for well over a century.

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

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

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

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

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

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

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

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

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

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

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

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