The former "holiday home" for monks at the Durham Cathedral.

Thought to be the oldest Norman crypt in the world.

A once-beautiful retreat is now a crumbling ruin.

These courts are the only ones of their kind in the world, made for a unique ball game that dates back to the 1700s.

A Brutalist monument in the middle of a housing estate by artist Victor Pasmore.

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

Though this bridge was originally built in the 12th century, only one of its 10 arches dates back that far.

This library dates back to the late 17th century and was one of the first public lending libraries in England.

Take afternoon tea in a 17th-century almshouse.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

These lamps were created to expel sewer gases after an event known as The Great Stink.

An unusual stone chair can be found on the banks of the River Wear, not far from Durham Cathedral.

A rather grand, but tiny, folly on the banks of the River Wear associated with a Polish count.

Rare remnants of the brick-domed ovens birthed in the Durham coalfield during the Industrial Revolution.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

This 11th-century Cistercian abbey was once seized by Henry VIII.

England's largest white horse isn't even white.

This industrial chimney looks rather out of place, isolated in the middle of an attractive woodland.

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

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

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

A shrine to one of England's female saints in what is believed to be her former home.