The location of Mirissa is conducive to making it a good base for day trips to more famous locations. The Galle Fort and Unawatuna Beach are located quite close by, close enough to make a day trip. You can spend a day at the UNESCO Heritage Site of Galle Fort, walking through the paved streets and making purchases off of little quirky shops. There are many places to eat, and you can even watch the sunset from the ramparts. Alternatively, a day can be spent at the famous Unawatuna beach. There are numerous pubs and restaurants on the beach for you to chill at, and the ocean is quite inviting.