Caloundra is the southernmost town of the Sunshine Coast proper, about 90 km north of Brisbane. It's less fashionable than Noosa and more workmanlike than Mooloolaba, but it has its own charms: several distinct beaches (Kings Beach faces open ocean; Bulcock Beach and Golden Beach face the calmer waters of Pumicestone Passage), a pair of historic lighthouses, and a more local atmosphere than the resort towns to the north.
Kings Beach has a pool and is good for families. The Pumicestone Passage between the mainland and Bribie Island to the south is a birdwatching area with wading birds, dolphins, and dugongs. Caloundra is a reasonable alternative base for exploring the Sunshine Coast if you prefer quieter surroundings to the more tourist-oriented north.