If you want to get away from the beach in Miami, I would recommend going to Miami Beach Botanical Garden. Several reasons to come there. First of all park is free and open almost every day. There are plenty of shady places and several fountains that will cool you off on a hot Florida day. Finally - I loved plants and butterflies . Lots of varieties of palm thees and orchids along with other tropical plants. There are several cozy areas to sit and relax, so bring a book and take anadvantage of this place. The only disadvantage it is a pretty small place and you can easily explore it on 1 hour.