The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

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

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

What was once England's second-richest abbey is now a haunting ruin.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

The intended purpose of this unfinished Elizabethan building remains a mystery.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Surreal riveted sea forts once protected the Kent shores from German attack.

A ruined castle has more than its fair share of legends and ghost stories.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

A little-known ruin with a convoluted history and a fascinating latrine drainage system.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

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

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

A legendary boxing venue and ring featured in Rocky V.

This public space is speckled with the eerie remnants of a defunct amusement park.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

This might just be the TARDIS of bookstores.