These spooky and unusual stone formations create an underworldly landscape.

This unique sculptural clock transforms into a periscope every hour.

A museum in England’s Lake District dedicated to the trusty pencil wants you to know the story of their World War II spy pencils.

Stonehenge has nothing on Castlerigg’s views.

Grotto replete with mystical designs laid out in glued shell mosaics.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

This striking icon of the disputed Republic of Artsakh caused a stir at a Eurovision Song Contest.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Artists and musicians now rule over this former rail station.

Giant, friendly pelicans in Central London, the most unlikely of places.

Abstract dinosaur models in London.

The remains of Crystal Palace Great Exhibition of 1851.

A kaleidoscopic warehouse-maze of handmade neon signs.

She asked for a potato cellar and over the next 23 years he gave her a network of holy caves.

A geological oddity topped with a 2,000-year-old pagan temple.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

Ancient rock-hewn town that witnessed key events of Georgian history.

Resonant stone, that has been played since prehistoric times.

Mysterious hillside with a continuously burning natural fire.

A shrine of fire worship built on top of a natural flame.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Ancient serpentine sacrifice holder that has stood the test of time.

A marvel of Byzantine engineering under the streets of Istanbul.