Dig into Australia’s natural history with the museum's special exhibits on whales and Antarctic explorer Sir Douglas Mawson. An Aboriginal Cultures Gallery displays artefacts of the Ngarrindjeri people of the Coorong and lower Murray. Elsewhere, the giant squid and the lion with the twitchy tail are definite highlights. Free tours depart 11am weekdays and 2pm and 3pm weekends. The cafe here is a handy spot for lunch/recaffeination.