An impressive display of more than 70 species of toxic plants populate these gardens, which gather a variety of poisonous plants from all over the world. This is a unique sight in the Canary Islands and you will find it inside the Pyramids of Güímar Ethnographic Park, covering 1,500 square metres (about 0.37 acres). The Secret Gardens were conceived to grow a botanical collection like no other on the archipelago, allowing people to get to know and enjoy these unusual specimens. With an entertaining approach, the idea is to teach visitors and alert them as to the dangers that plant poisons pose for human beings. Signs and information boards have been put up to enhance your visiting experience and allow you to discover the myths and legends behind poison. Opening hours: every day from 9.30 am to 6 pm. Entrance price: €16 (Residents €12.75).