The document discusses several UNESCO World Heritage sites in the Canary and Balearic Islands of Spain, including: Ibiza, which provides an example of marine and coastal ecosystem interaction and preserves archaeological sites showing its long history. The fortified town of Ibiza influenced fortifications in the New World. Serra de Tramuntana in Mallorca has a cultural landscape resulting from an exchange of knowledge between cultures. San Cristóbal de La Laguna in Tenerife has a grid urban structure and over 400 protected historic buildings from the 16th-18th centuries. Garajonay National Park in La Gomera remains an unspoiled landscape with unique flora and fauna protected by