This curious, round temple is the oldest still-standing marble building in Rome.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A spectacular disused railway viaduct in a beautiful countryside nature reserve.

These ruins are a monument to the region's industrial heritage, and the site of England's worst mining tragedy.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

This industrial gem was one of the earliest examples of a metal-framed building.

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

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

One of the shortest streets in York has an especially odd name.

This popular square's history as the former site of a church is right beneath your feet.

This network of narrow, medieval passages has the most delightful name.

A stained-glass window from the 15th century offers a vision of the end of the world.

The little-known second castle that William the Conqueror built in York.

A Reformation-era fiery figurehead once denoted this location as a print shop.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

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.'

The recreated ruins of a house designed to memorialize a World War I shelling on the town.

These carved, weathered stones once gave mail carriers and pub goers a leg up.

The remains of a historic kiln once used to produce the famous Rockingham porcelain.

A monument with a strange legend involving a horse's tongue.