Brain collection and database that narrows the gap between man and animal.

The statues commemorate the legendary mass killing of escaped circus monkeys.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.

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

Rumors persist that a bottle of whiskey is sealed within this Demijohn-shaped adornment.

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.

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

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

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

Time travel with sweets across history at this research-based candy store.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Bizarre Cavern.

Built by the patriotic residents of Boonsboro in a single day.

A miniature city within a city, complete with traffic signs, signals, and streets to teach Baltimore's youth traffic safety laws.

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