Most of the eastern headland of Sydney Harbour is covered by the lush greenery of the Royal Botanic Garden. The oldest botanic garden in the country, it is made up of 15 themed gardens that house more than 27,000 plants from around the world. Visit the rotating exhibitions inside The Calyx or join the free guided tours held every day. Joining onto the garden is The Domain, a grand outdoor event space that frequently hosts huge concerts, opera and festivals, and is also home to the Art Gallery of NSW.