The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Huge winged monument in the United Kingdom.

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

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

Locals affectionately dubbed this World War I memorial "Tommy."

This sculpture honors a long-beloved English comic strip in the main character's hometown.

The oldest warship in Europe is still afloat.

Built in 1911, the Tees Transporter Bridge is one of only six transporter bridges still in operation.

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

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

An enigmatic sculpture depicts a ruined home with debris stretching for over half a mile along the river.

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

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

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

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This 17th-century pub once had a hole in its wall so the neighboring blacksmith could easily access beer.

400-year-old garden, restored to beauty.

The largest greenhouse in the world is home to over one million types of plants.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.