“Mission Concepcion” was started in the early 1700’s and finished in 1755 in San Antonio, Texas. Now it is part of a National Heritage Site and shares the space with three other mission churches. Its purpose was to convert the local people to Catholicism. Today, the building is a good example of Spanish Colonial cruciform (cross-shaped) architecture. Originally, the outside and inside were covered with geometric Moorish designs. Now only a few frescos remain on the inside. San Concepcion is the oldest unrestored stone church in America. The reason it survived? It was built on bedrock.