Houses are tucked between, on, and underneath giant boulders.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

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

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

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

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A kaleidoscopic warehouse-maze of handmade neon signs.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The red letters in the literary pavement leading to the library form a mysterious code.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

This stone once marked the boundaries of Liverpool's medieval markets.

Most of Britain's gold reserve was secretly stashed here after the start of World War II.

Charles Dickens described the concert room in this amazing Victorian hall as "the most perfect room in the world."

This aging storage facility is the world's largest brick warehouse.

Six neolithic sandstone boulders remaining from a dolmen.

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

Prehistoric sandstone menhir with Early Bronze Age cup and ring markings, also known as Robin Hood's Stone.

17th century puritan church with connections to the Salem Witch Trials.

A thousand year old oak tree survives in Liverpool.

Much of what constituted mid-century Liverpool now litters a beach outside of town.