Cyberpunk 2077 recently got a pretty chunky patch that adds some more content to a game that, as far as we are concerned, is already complete, so it is pretty awesome that the devs are still putting in the effort to keep it somewhat fresh. Despite all the fixes over the years, there are still some bugs that you can do to reach areas that are typically inaccessible, and here, we will show you how to get to Club Atlantis!
Cyberpunk 2077 – How To Quickly & Easily Return to The Atlantis Patch 2.3
Club Atlantis, at least within the current timeline of Cyberpunk 2077, is already gone and was shut down a long time ago. Although you briefly get to see it during the main story through a flashback, the club itself does not really exist anymore, and it was replaced by the Afterlife as the new hub for fixers and mercs.
With all of that said, the club is still technically in the spot where it should be, but the game predictably makes it completely inaccessible through normal means. This applies to most of the locations that you see in flashbacks, actually.
For Club Atlantis, you will first need to go to the marked location in the map image below. There, look above you until you find a ledge with orange strips on the wall. This is where you will want to go.

To get there, make sure that V can double jump first, as you will need it to actually scale the wall. Using the blue building nearby, you can use the windows as stepping stones to get higher.
While facing a window, jump backwards and then double jump forward to get to higher ground. Repeat until you are high enough to reach the highlighted spot from earlier.
Once you reach the orange part of the building, you will notice that there is no solid ground under it. Follow the ledge until you reach a neon sign. Once you are near the neon sign, enter through the blue wall to your left, which is not solid.

By clipping through this wall ever so slightly, you will see some panels that you can step on below. Land there and make your way towards the lit up rooms inside, which you will notice is actually the interior of the Atlantis.
Keep walking above the interiors until you find a spot where you can clip through. Once you fall in, congratulations, you are now back in Club Atlantis, which technically should not exist anymore but is still present in the game as this is where you load in while playing through the flashback.
Just note that you have to skip to night time if you do this during the day. There is a filter being applied inside this building that makes it blindingly bright at day, and some theorize that this is a part of how the game tricks you into thinking that you are in a completely different version of the map.
Unfortunately, there will be nobody inside the building, since there is no reason to keep any NPCs loaded in here during regular gameplay. You also cannot leave once you do this, so if you do get in here, you will have to load an earlier save.
If you do not want to go through all the trouble of parkouring up here, you can simply noclip in there and save yourself a bit of time. Some even claim that NPCs can spawn in if you do it this way, though we cannot confirm if this is true.

And that is really all you need to know in order to get in there. Again, this is just an old out of bounds exploit that you can still do in the current update, not a new feature or easter egg to be found.
If you want to do some more out of bounds trickery, whether for photo mode stuff or just sightseeing, check out our guide on how to go back to Yucca in Cyberpunk 2077 Patch 2.3. This is for all you nomad enjoyers out there, just in case you wanted a throwback to the intro of your playthrough.