With no menu and no sign, this 130-year-old taverna doles out affordable home cooking.

This abandoned shopping arcade has new life as an art installation.

These caves secretly held national treasures during World War II.

This graffitied 19th-century building was a prototype of European industrial architecture.

After a catastrophic forest fire, a Greek artist transformed scorched tree trunks outside an old sanatorium into this haunting sculpture garden.

This striking sculpture of Icarus honors Greece's fallen flyers.

Where commuters walk through remnants of an ancient Greek necropolis.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A sharp sculpture made of thousands of pieces of jagged glass.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

An ancient octagonal weather station named for the eight Greek gods of wind.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The world's oldest optical museum is an odd collection where the exhibits look at you.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

Tucked among the sand dunes overlooking a Welsh beach, a real-life tribute to a fictional elf.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

The grave of the legendary "Bonzo" can often be seen covered in cymbals and drumsticks.

Quaint, disturbing, and macabre objects are all on display at this intriguing collection of medical instruments from bygone eras.