A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

400-year-old garden, restored to beauty.

The anatomical-pathological collection of a man who changed surgery.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Rebuilt remains of a temple to Roman god Mithras.

The curios of pharmacist and collector Henry Wellcome.

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

A student driver's nightmare.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

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

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

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

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A beautiful chapel on the hills of the Oltrepò Pavese claims to house the tomb of King Edward II of England.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.