Tenerife is , with its area of , the most extensive island of the Canary Islands . In addition , with 904,713 inhabitants it is the most populated island of the archipelago and Spain . Two of the islands ' principal cities are located on it : The capital , Santa Cruz de Tenerife and San Cristóbal de La Laguna ( a World Heritage Site ) . San Cristóbal de La Laguna , the second city of the island is home to the oldest university in the Canary Islands , the University of La Laguna . The Teide , with its is the highest peak of Spain and also a World Heritage Site . Tenerife is the site of the worst air disaster in the history of aviation , in which 583 people were killed in the collision of two Boeing 747s on 27 March 1977
worst air disaster
Tenerife airport disaster
Canary Islands