An 1830s street scene and roadside relics trace the country’s first great highway

Bizarre Cavern.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

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

An astounding collection of medical specimens, including bits of President Lincoln.

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

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

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

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

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

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

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

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

She stares out across six lanes of traffic, clutching a musket and infant with determination.

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

A merry-go-round that became a rallying point for the early Civil Rights Movement.

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

This suburban house is made of dirt, and almost sparked a revolution in home construction.

The first Confucian temple in Taiwan, founded by the son of a pirate lord, doubled as the island's first state-sponsored school.

On the roof of the oldest department store in Tainan stands a Shinto shrine dating back to the 1930s.

Only through deep darkness and tragedy did this elaborate royal palace become a sacred temple.

A monument to placate the spirits of an ancient forest.

You can still see the remains of a sacred 3,000-year-old cypress.

Enormous pendulum helps keep Taiwan's tallest building from swaying.