These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The bones of two medieval royal lions were discovered at the historic fortress.

A relic of Victorian grandeur hides beneath a busy South London road.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

A unique tribute to the millions of animals who served and died for the British military.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

A Roman spa buried deep beneath the City of London.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

This 17th-century pub once had a hole in its wall so the neighboring blacksmith could easily access beer.

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

This 1920s Dutch barge is now a floating bookstore.

Crooked windswept pines give this old forest an enchanted and magical look.

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

A tribute to the incredible generosity the Choctaw Nation showed the Irish people during the Great Famine.

A medieval military street hidden beneath a charming French fishing village.

This gnarled old tree supposedly sprouted from seeds kept in the pocket of a 16th-century Spanish sailor.

The ruins of the "20-year town" lay out among the mountains of Alberta.

This tree was extinct for a thousand years before sprouting again from a 2,000-year-old seed.

The Arctic Circle runs through this isolated spot north of Iceland.