Gladiators once walked this ancient, subterranean passage.

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

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

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

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

Where commuters walk through remnants of an ancient Greek necropolis.

These planks were originally installed to hold the dead.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

The view that inspired the scenes of Dracula's first landing in England.

A monument to the real explorer and bear who inspired characters in Philip Pullman's 'His Dark Materials.'

Home to the longest wooden escalators in the world.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

A vintage penny arcade hidden in the back of a fun fair-themed bar.

Decrepit Victorian public lift is a white-knuckle ride.

Follow the original medieval paths that wind through this intriguing section of the city.

A century-old tradition has culminated in a small but singular collection of feline effigies.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

An incredibly well-preserved piece of ninth-century Viking poop.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

Semaphore saints, a golden dragon's head, and a stone carved with religious warnings all call this cathedral home.

This unique building in the main square stands out among the city's typically Baroque architecture.