1. San Fernando Cathedral is one of the oldest cathedrals in the United States. It was originally built in the 1730s by Spanish colonizers and has undergone numerous renovations since then. The cathedral is known for its beautiful Gothic-style architecture and stunning stained-glass windows. One of the most interesting features of the cathedral is the \"Saga\" video art installation that is projected onto its facade every night, telling the story of San Antonio and its rich history.

2. The working time of San Fernando Cathedral varies depending on events and mass schedules. The cathedral is usually open to visitors during the day from 9 am to 4 pm, Monday through Saturday, and from 8 am to 4 pm on Sundays. However, it is best to check their website or call ahead to confirm the hours of operation. The phone number for San Fernando Cathedral is (210) 227-1297.

3. Admission to San Fernando Cathedral is free. However, a donation is appreciated. There are several parking options available near the cathedral, but public transportation is also a convenient option. There are several bus routes that have stops near the cathedral, including the 7, 20, and 26.