Considered one of the most cosmopolitan cities in the Southern Hemisphere, Sydney offers just about anything—from beaches and wineries to stunning landmarks and world-class shopping. Tour architectural marvels like the Sydney Opera House and the Sydney Harbor Bridge, view life below the surface from Sydney Aquarium’s underwater walkways, or take it all in from above on a tour of the Sydney Tower.

Settled in 1801 as a colony for convicts sentenced to dig for coal, the area’s celebration of the surfing lifestyle and a no worries attitude make it one of the most laid-back places in the developed world. A diversity of natural attractions offers many opportunities for exploration. You can also sip cocktails at a harborside restaurant, take in some live music at a local pub, follow a bushwalk trail at Blackbutt Reserve to see koalas, kangaroos, wombats and native birds.

One of the best departure points for excursions to the Great Barrier Reef, Airlie Beach is extremely popular with backpackers, yachtsmen and other lovers of the tropical lifestyle. Sailing among the calm, protected waters of the Witsunday Islands is a must-do on the wish lists of many travelers. Charming shops, exhilarating skydives over the shoreline, and everything in between is going to make this a memorable visit.

Cairns is located in tropical North Queensland. To the north, west, and south, it is surrounded by lush, tropical rainforest. And to the east lies the Coral Sea and the Great Barrier Reef. Apart from being the gateway to magnificent natural attractions, this waterfront city offers an abundance of possibilities, including the opportunity to safely spot crocs.

Cairns is located in tropical North Queensland. To the north, west, and south, it is surrounded by lush, tropical rainforest. And to the east lies the Coral Sea and the Great Barrier Reef. Apart from being the gateway to magnificent natural attractions, this waterfront city offers an abundance of possibilities, including the opportunity to safely spot crocs.

Cruise to Port Douglas and you’ll find a miraculous blend of coral reefs and subtropical rainforest, which means it’s an easy destination to find fun things to do in nature. For the beachy and the active, sunbathing on Four Mile Beach or diving the Great Barrier Reef awaits. For the athletic traveler, head into the heart of Daintree Rainforest to hike, zipline, or simply enjoy the beauty of the jungle. Stop in at the Wildlife Habitat for the chance to see koalas, kangaroos, and other native Australian species. Of course, Port Douglas isn’t all natural beauty. It’s also a popular resort and marina town where travelers can enjoy life’s simple pleasures, from a plate of freshly shucked oysters straight from the marina to a dip in a glittering five-star resort pool. On cruises, Australia makes for an ideal destination for every energy level. During your time in port on Port Douglas cruises, you’ll see a brand new side of Queensland, Australia.