Hidden in an enchanting ravine, numerous mysterious sandstone grooves hint at ancient pagan rituals.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A unique collection of more than 250 rocks and minerals located on a university campus.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

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

Legend has this precariously placed rock was placed by giants. Science has another explanation.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

One of the few surviving street funiculars in the world.

The final resting place of England's most notorious bandit.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Remnants of a Victorian garden feature sitting in public woodland.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This 17th-century house was once the trading hub for two prominent Canadian fur barons.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

One of Canada's oldest museums, the beautiful Redpath has been serving up Natural History and Ethnography since 1882.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

Its columns were all carved from the same white oak tree.

This hidden park hosts a rogue’s gallery of eccentric architectural obelisks.

The abandoned transportation hub hides within the Glasgow attraction it once served.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.