This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This lavish room in a New York City mansion is a rare relic from the end of the Gilded Age.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Step inside Lucy, the world's largest "elephant."

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

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

One of the oldest standing structures in Montgomery County, Maryland.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

There’s a hidden military meme engraved on the World War II Memorial.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

A Spiritualist house of worship where believers communicate with the dead in the spirit world.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

People escaping slavery may have hidden inside a corpse vault.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

According to local myth this cemetery is half evil spirits, half good—split down the middle.