This little-known hero has been protecting "The Fens" for close to 400 years, and now from its most powerful challenger yet: climate change.

Inspired by the colossal pyramids at Giza, this 15-foot structure is believed to be the first funerary pyramid in Great Britain.

These ruins saw a second life as a cemetery.

The lighthouse is on a island which is connected to another island, which is connected to another island, which is connected to one of the largest islands in the world.

A museum pays tribute to the glass-making industry of Sunderland.

This crumbling coast and its teetering tower are literally filled with history, but they are also at great risk of becoming history themselves.

On this small spit of land, the person who runs the public house is considered the King of Piel Island.

The burial site of a murdered bishop and his alleged killers.

Located on the Islandmagee peninsula, these gardens are among the most distinguished in County Antrim.

This park and coal mine heritage site is home to two of the last steam winding engines in the UK.

When the city of Manchester built a new centralized heating network, they did it with style.

The ruins of an unfinished explosives factory can be found while taking a gentle stroll through a Manx glen.

Built in 1547, these ruins lie on a rocky promontory in Ballintoy jutting into the wild ocean waters below.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

A 16th-century artillery fort built to protect England against European invasion.

The ruins of a 15th-century tower house.

The longest staircase lock in Britain.

The world's oldest railway bridge in continuous use.

This concrete monster of a wreck lies in the mouth of Langstone Harbour as a monument to the incredible history of D-Day.

The ruins of this magnificent Scottish castle blend both Gothic and Renaissance architectural styles.

This abandoned bridge over the River Irvine may be the oldest surviving railway viaduct in the world.

This Victorian footbridge over the River Tees was originally built to carry water from the high moorland to the industrial towns on the coast.

A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

A well preserved remnant of the English Civil War.