Malaysian fireflies create a dazzling display as thousands light up in unison.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Historic medieval fortified city in southwest France.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A village on the east coast of England that has almost completely eroded into the North Sea.

Europe's largest prehistoric mound – burial site of a legendary king?

These picturesque ruins crumble beautifully into the ocean.

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

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

This aging storage facility is the world's largest brick warehouse.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The first archaeological site discovered by aerial photography.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

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

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.