Take your fake wall. I have the sierras at my back door.
In fact the nature is much larger than the city, and it’s most entirely empty if you aren’t intentionally visiting the most popular spots.
And I understand the stereotype of the techie who thinks Yosemite Valley reservations is the only way to enjoy nature, but I don’t think that’s me. I’ve been on dozens of trips to the Sierras and I’m fairly experienced with the various permit systems. That said, I’m sure there are still less-travelled gems that I haven’t discovered. :)