Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

This ordinary street was made infamous by a legendary visit from the devil.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

The single richest source of elemental discoveries in the world.

Stockholm's deepest subway station is also a stunning ecological wonder.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

One thousand trees were planted in Norway to be used to print books a century from now.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

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

A kaleidoscopic warehouse-maze of handmade neon signs.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

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

Two plaques commemorate the site of Shakespeare's first theatre.

Public access to clean drinking water was an instant hit among the masses.

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.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Repository for more than 22 million pickled specimens.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.