It may not be the most technologically advanced museum, but where else does a giant concrete sloth greet you? The permanent exhibits are of decidedly mixed quality, while the displays compiled in association with the Smithsonian Institution are educational and occasionally fascinating. And a recent temporary exhibition about the Titanic featured full-size re-creations of some of the ship's interior spaces, plus artefacts from the wreck. But the Sports Challenge section, in which visitors get to pitch a baseball and shoot an imaginary basketball, has dated about as well as a Commodore 64. The Gravity Playground is enjoyed by under-sixes, but it can seem more crèche than learning zone. The adjoining Planetarium is similarly old school, but benefits from the free observatory viewings on Fridays (8-10pm), a favourite of south Florida teens for decades.