An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

The fountain marks the area where hundreds of accused witches were burned at the stake.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A 30-acre garden inspired by the principles of modern physics.

360° views of the city plus five floors of optical illusions and hands-on science.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

Ship skeletons haunt Baltimore's waterways.

Walk through the history of American pop culture.

The "Sultan of Swat" once attended a school at the site of this baseball field.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

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

The trials and tribulations of marking Poe's grave.

This historic building is now home to the Public Access Corporation for the District of Columbia.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

A memorial to a shareholder activist feared by CEOs around the United States.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

In the basement of the U.S. Capitol Building is a hidden storage room full of ornate floor tiles leftover from the 1850s.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.