Semi-precious Blue John stones have been mined in this cavern system for centuries.

Seat of the Duke and Duchess of Devonshire for centuries.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

This former Victorian bathhouse was all the rage during the mid-19th century and put Woodhall on the map.

This century-old cinema is complete with musical interludes and boasts a rare projection system.

The world's first military tank was designed in this English city amid the stalemate of WWI trench warfare.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

Inside this chapel, Victorian jailers took the separate system to new levels.

The charming collection illustrates life in Lincolnshire in the 18th through 20th centuries.

The oldest of the three remaining bridges in England with buildings on top of them.

Modern commuters still pass through this 2,000-year-old Roman archway.

The once-a-day siren is a reminder of the days before time was standardized.

As part of a larger public art project, three pillars honor the past of Wincobank.

This magnificent mural was created with over 30,000 colored bricks.

Three memorials honor the victims of the worst sports stadium disaster in Britain.

This house was home to a succession of park keepers for more than 90 years, but in all that time, it never had a toilet.

This police call box harkens back to an era of pre-radio communications, and has a rather unique feature.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

One of the last remnants of the Bessemer process that revolutionized steel production during the industrial age.

A tribute to the women who quietly kept the local steelworks alive during both world wars.

Amidst towering office buildings, a local pub lives inside Sheffield’s oldest surviving domestic building.

Cemetery established by the Victorians as a solution to the overflowing graveyards.

The whimsical steel spider lurking in the shadows of this suspension bridge shows that engineers can have a sense of humor.