The Observatory is a major venue for indie music and hip-hop in the Orange Country area. It is located in Santa Ana just to the north of the 405 freeway. It was converted from the previous venue, The Galaxy, in 2011. It has a cool staggered concentric semi-circle design around the stage, with some key spots that have nice cold air blowing through the ducts from above, if you can find the right spot. It is in the same building as Constellation Room, which is a much smaller space, so it helps to pay attention to which room one is heading since the tickets are not interchangeable. It has a sister locale in San Diego called The Observatory North. Both venues were acquired by Live Nation in 2019.
It is on the right at the main entry, completely outside the whole performance area
They are outside the area with the stage and the audiance, in the hallway.