Dating from 1828, these gardens were established by the Belfast Botanic and Horticultural Society. Ten years later, they gained a glass house, or conservatory, designed by noted Belfast architect Charles Lanyon. Now known as the Palm House, this unique structure contains a good variety of tropical plants, including sugar cane, coffee, cinnamon, banana, aloe, ivory nut, rubber, bamboo, guava, and spindly birds of paradise. If the weather's fine, stroll in the outdoor rose gardens, first established in 1927.