Townsville is a coastal city in northeastern Queensland and is a popular destination for tourists. The quiet sandy beaches across the coast are ideal for fishing, camping, and birdwatching. Major attractions of the city are the Great Barrier Reef which has the largest collection of coral reefs and diverse marine life and the Strand esplanade, which is famous for its pier and water park. The Castle Hill is a popular hiking trail, and the Crystal Creek features large deep water holes, a stone arch bridge, camping sites, picnic areas, and BBQs. Another must-visit site is the Billabong Sanctuary wildlife park which houses koalas, wombats, and crocodiles.