This relaxed crag is a great spot to try multi pitching for the first time or just have a chill, relaxed session.
Wonder Wall is easy to get to from the main road into Potrero Chico. One of the first things you will see after passing under the main archway is the park, with loads of empty swimming pools and orange fences. You will cross through here to get to the Wonder Wall. Sometimes the gate is opened. Other times you need to hope over the low, orange concrete fence to get into the park. You will be able to see where that because it is so run down from thousands of climbers passing over this spot before you.
Once in the park, you follow a few stairs upwards until a path starts. The first exit will be Wonder Wall. If you continue farther, you will end up in Virgin Canyon.
This crag has loads of trees, keeping it a shady spot to belay on warmer days. You can bring your hammock, snacks, a game of cards, etc etc. This is the crag that we go to when it's a rest day but we can't handle 24 hours without putting on a harness. There is great climbing near if you're looking for a bit more of a challenge - think Virgin Canyon or Los Lobos Canyon - but this is just different vibes all around.
It is also a great spot to settle in and learn new things. The 3 pitch Ramsey's Shenanigans is where I climbed my first ever multi pitch. It's a 5.9+ and a perfect start to going over all of the new techniques that come with multi pitch climbing.
There are only a handful of routes on this wall, but a couple of other classics are Mexican Squeeze Job and Evil Shenanigans.