Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

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

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

Using a massive antenna made up of five miles of wire, two scientists tuned into organic radio waves from the planet Jupiter.

Huge abstract sculptures of the Puerto Rican Flag.

No one knows how many bodies are in this vault in a Chicago public park.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

Illegal drag racing two stories beneath Chicago’s streets.

Home to a protest movement, a bombing, and a dramatic change in labor history.

World Trade Center memorial likened to a woman's sexual organ.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

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

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

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

These unusual rooms on wheels are holdovers from the 1960s.

This statue honors the author's groundbreaking family story.

The land is home to swimming ponies and a legendary 18th-century treasure.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Giant, friendly pelicans in Central London, the most unlikely of places.

Hear the quietest sound from across the dome.