Here at the Bloom Room, "budtenders" help customers find the cannabis products they're looking for — including out-of-town guests, like this man who's visiting from overseas. Anyone 21 and up can enter with a valid ID or passport.

Many dispensaries offer customers the chance to smell cannabis flower samples before they buy. Terpenes, the chemicals in the plant responsible for its distinctive fragrance, can vary widely depending on the plant's genetics and where it's grown.

Cannabis lounges or cafes are now legal in California, including "dab bars" like this one at Urban Pharm. Here, visitors can buy individual hits of concentrated cannabis, akin to doing a shot of alcohol at a bar.