ShotHotspot has mapped 19 abandoned places in Canary Islands, Spain, ranked by how often they're photographed, viewed and voted for. The most popular are Las Palmas de Gran Canaria, Barranco De Azuaje and Grancanaria Ruins Industrial Decay. Some are private property or unsafe, so get permission before you visit.
We don't know whether you're allowed to visit any of these places. Many are private property, closed to the public or unsafe: get permission from the owner or the relevant authority, and take safety precautions.