The Botanical Garden in Copenhagen is a lush oasis spanning ten hectares, boasting a diverse collection of over 13,000 plant species. It's centrally located near Nørreport Station, Kongens Have, and SMK, so it's nice to walk through while you're in the area even if you don't plan to spend a lot of time here! The garden is free to visit, and you can pay to go into the Palm House (greenhouse).