This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

The most northern place on the mainland of Great Britain.

The world's shortest street was created by an awkwardly placed hotel.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

England's most notorious suicide spot.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

Both church and state get put to the torch in this annual festival in the "Bonfire Capital of the World."

The largest greenhouse in the world is home to over one million types of plants.

400-year-old garden, restored to beauty.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

A quiet memorial to those who died saving others in the heart of the City of London.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Hear the quietest sound from across the dome.

This South London cemetery holds the remains of more than 15,000 people.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.