Welcome to the Tour! Here, you will tour the various rooms in the Cactus Hotel that are available for events. While touring, you will learn a little about each room and about the Cactus. Opened in 1929, the Cactus Hotel is the fourth hotel built by Conrad Hilton. At 14 stories high, the Cactus stands taller than any other structure in San Angelo. Every weekend, one will find events taking place in the public rooms. Most of the events are private - such as a wedding or high school prom.