Fortaleza Grande / Santa Lucia
is a town and a Spanish municipality in the south-eastern part of the island of Gran Canaria, in the Province of Las Palmas, in the Canary Islands.
The town of Santa Lucía de Tirajana is situated in the mountains, 27 km (17 mi) south-west of Las Palmas. Its population is 68,506 (2013), and the area is 61.56 km2 (23.77 sq mi). The municipality includes the larger towns Cruce de Sardina, El Doctoral and Vecindario, located near the coast. The GC-1 passes through the south-eastern part of the municipality.