Believe it or not, I'm still in my winter city here in Canada. Where am I, you ask? Let me present to you the Assiniboine Park Conservatory. It's sort of a hidden gem that holds a year round lush green paradise. It's quite a small space to hold so many types of plants, trees & bushes; However, there is just something rejuvenating in seeing nature this "alive" in the dead of winter. This conservatory in particular is free to the public & open daily from 9am to 4pm this winter. I'm pretty sure your own city will have something similar (perhaps a greenhouse?) and I highly encourage you to visit!