Jardín Botánico Atlántico (Atlantic Botanic Garden)

This garden was inaugurated in 2003, becoming the first garden of its kind in northeast Spain. The beautiful green space is dedicated to conserving and studying the endemic flora of the forests that stretch across Spain's Atlantic coast. Wander around the garden, and you'll encounter more than 30,000 species waiting to be discovered.

A particularly noteworthy feature is the garden's stone labyrinth. Contained within its winding walls are toxic plants such as devil's snare, nightshade, Brugmansia, anthurium, wolfsbane, henbane, oleander, and mandrake. It's hypothesized that some of these plants may have been used in ancient European witchcraft.

Of course, there's much more to see than the labyrinthine array of deadly plants. The garden also boasts a lake, a small museum stuffed with a seed collection, a conservation unit, an educational department, and an exhibition hall.