In the 19th century, this pit housed a fully grown black bear for the entertainment of visitors. Today there is a sculpture in tribute to the poor creature.

This massive complex is made up of hundreds of smaller temples that date back to the ninth century.

This grand Georgian manor house was converted to serve as an isolation hospital before it was abandoned and destroyed.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

A tiny, heartwarming piece of art hiding in plain sight.

The small bright red pillar survived the 1996 Manchester bombing virtually unscathed.

This nondescript building hides an entrance to an underground nuclear tunnel system.

Despite having a dome made of papier-mâché this tiny observatory has survived for over a century.

A hunk of prehistoric lava rests amid the Gothic architecture of a campus quad.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

These remarkable cascades are the jewels of Upper Tees.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

Constructed on the ruins of a convent, this tower saved countless lives.

Huge winged monument in the United Kingdom.

The house in the middle of the motorway.

A rotating bridge that carries a little canal over a larger one.

Cliffside houses provide a spectacular view from their perch above the valley.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

One of Ireland's most infamous prisons for rebels including men, women and children.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

A museum marks and documents the site of the Titanic's launch.

These engineering masterpieces are a dominant feature of the Belfast skyline.

It was once nicknamed "the most bombed hotel in Europe."

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.