These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

This semi-secret storybook hedge maze is also the oldest garden in the city.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

A temple to modernity, tucked away amid Barcelona's more well known museums.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

For one day every month Barcelona's Estació de França transforms into a market for model trains.

A stately palace has been converted into the world's largest cannabis museum.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Mountain where Jesus was first tempted by the Devil.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

This crack in France's seaside cliffs once hid a sinister secret.

Wall after wall of this French seaside neighborhood is intricately decorated with seashells and corals.

One man's fifteen-year diversion lead to a garden of intriguing sculptures.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

A huge Megalithic chamber tomb located behind a cafe.

Figures of unknown origin carved into the surfaces of underground caves.

Beautiful carved tunnels.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

A massively oversized measuring tape sculpture sits inside a hidden yard.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

The sunken structure looks like the victim of a catastrophic flood.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Historic medieval fortified city in southwest France.

A medieval church with largest and oldest collection of Renaissance frescoes in France.