This incredible second-century sculpture depicts a trio of gods worshipped by the ancient Romans.

It's a mystery why these remains were found with no traces of their bodies in sight.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

A large collection of ancient runestones decorates this university courtyard.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.

A Viking man's tribute to his brother stands in Gävle's oldest church.

This small sculpture honors a shuttered bookshop that was the site of a fiery act of protest.

This extraordinary Viking artifact has traveled throughout the city.

An artistic interpretation of the history of a Scottish park, combining poetry with anthropomorphic animals.

These wooden pipes were crucial to providing water to Medieval Edinburgh.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

This roadside stand packs 300-plus varieties of tomatoes, from "Maiden's Fire" to "Kaleidoscopic Jewel."

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A "house to which to flee" for settlers in colonial Pennsylvania.

A park full of outsider art, created by college students studying outsider art.

Belfast's namesake river still winds below the city center, hidden from sight.

The oldest candy store in the world has been selling traditional sweets since 1827.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

A dramatic sculpture high up in Yorkshire with vistas on an industrial scale.

A ruined castle stands atop a hill surrounded by dragon lore.

According to legend, a noble knight and a terrible dragon lie beneath this storied hill.

This simple gravestone remembers a pig who single-hoofedly raised $19,000,000 for the Navy.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.