In Argüello's tenure one new mission was founded: Mission San Francisco Solano (California) on July 4, 1823 by Father Jose Altimira. This was the last of the 21 missions founded as the Mexican secularization act of 1833 put an end to the missions. Mission San Francisco Solano was also the northernmost mission and the only one started after Mexico gained independence from Spain. Argüello wanted a robust Mexican presence north of the San Francisco Bay to keep the Russians who had established Fort Ross on the Pacific coast from moving further inland and down the coast. General Mariano Guadalupe Vallejo later closed the mission in 1834-1835, he took the roof titles for his own home, others joined in taking parts of the buildings and it turned to ruins, later being completely torn down. In need of a church for the town he made, in 1840 Vallejo had a small chapel built were the original parish church was.