Though much of the castle was robbed of its stones, the underlying earthworks are among the best-preserved in England.

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

A piece of public art commemorating the world's first Black professional footballer.

The world's oldest railway bridge in continuous use.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

The remains of a remote village that once housed over 1,200 dam workers and their families.

A giant piece of cutlery designed to remind us about the origins of our food.

The largest timber structure in Europe.

This memorial depicts the unlikely team that won England the Sir Thomas Lipton Trophy.

The nearly 200-year-old folly has a secret spiral staircase hidden in one of its pillars.

This tribute to Sunderland's mining past stands outside the home of its football club.

This steel sculpture made from a recycled crane towers above a former shipyard.

A museum and gardens with unusual plants and a history of progressive programming for the blind.

A vortex fountain that seems to rise out of the ground.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

Public art now takes pride of place on the site of one of County Durham's last deep coal mines.

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

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 perfectly running 230-year-old silver automaton and music box.

Abandoned for over 20 years, this art deco seaside swimming pool is a magnificent waste.

A locomotive made from 185,000 bricks celebrates the town's pioneering railway history.

Despite its ornamental looks, this towering Tuscan-inspired anomaly was a masterpiece in hydraulic engineering.

The abandoned railway bridge stands hidden in the farmland of rural Cumbria.