La Fuente Blanca is a large ranch featured in Grand Theft Auto V.
It is owned by Martin Madrazo, and serves as a territory for the Madrazo Cartel. It features a ranch house along with various stables. The property boasts a one-hole golf course, a large L-shaped pool, and a jacuzzi.
In Spanish, the name translates to The White Fountain. As the name implies, the ranch features a white fountain right before the main door.
The interior of the ranch can be seen through the mission Caida Libre, but the ranch won't be accessible to the player during normal gameplay. Cartel members can be seen standing guard or patrolling the ranch. Martin's cousin, Javier can be sometimes seen amongst the guards patrolling the ranch, until the mission Caida Libre.
Grand Theft Auto Online
The ranch is featured in GTA Online as one of many destinations for special cargo selling missions, likely putting the Madrazo Cartel as a customer of the player's business.