A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

An abandoned, desolate train tunnel that was used during World War II.

This abandoned hospital village was once viewed as an innovative way to deal with mental illness.

A memorial commemorating the only Scottish police investigation into an extraterrestrial incident.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

Enter the world under the hill at this ancient UK burial chamber.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

Hidden in this modern shopping center is a relic of 16th-century capital punishment.

It's said this was once the home of King James V's pet lion.

This Neolithic stone circle is the most complete of its kind in Scotland.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

This Scottish castle has witnessed clan rivalries, Jacobite uprisings, whisky smuggling, and more.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This tiny traditional smokehouse is the only one left in this historic fishing port.

This coin collecting cod is over 130 years old, and the United Kingdom's smallest listed structure.

The recreated ruins of a house designed to memorialize a World War I shelling on the town.

This medieval church is not only notable for its architecture, but also its connection with LGBTQ+ history.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.