You might have noticed from looking at aerial photos of the coastal towns of Dubrovnik and Split that there's not a lot of green space in these ancient walled cities. In Split, locals head up to Marjan Hill. The view of the old city from there is spectacular. In Dubrovnik, many locals take the ferry to Lokrum Island, a haven of tranquility, and a nature reserve. It was also a filming location for Game of Thrones. Lokrum has several beaches to enjoy as well.