Sylvan Glade is the second and best secret neighbourhood that you can unlock in The Sims 4. To get reach and unlock Sylvan Glade, you'll need to send a sim to the Crick Cabana lot in Willow Creek. Any sim will do, as there are no special skill requirements to unlock this secret neighbourhood. There's a unique tree in the large space next to the lot, which should give you the option to 'View' it. If you repeatedly View it, a strange series of messages will appear and your sim will climb inside the trunk of the tree. Sylvan Glade has a strange fantasy theme, with the area covered in pink, blossoming trees, bright flowers and a pristine fishing pool. The glade even features a strange, slightly creepy easter egg. If you approach the top right bushes, a pair of red eyes will appear and disappear, accompanied by laughter.