The Royal Botanic Gardens is located in the heart of Sydney, Australia. Established in 1816, it is the oldest scientific institution in Australia and is home to a vast collection of national and international plants. From rare and threatened plants of the world to the romantic rose garden, the themed garden areas show the diversity and beauty of nature. The gardens are open all year round and access is free. Situated on Sydney Harbor and adjacent to the Sydney CBD, the Sydney Opera House and the large public park lands of The Domain, the gardens is a popular attraction in Sydney.