Formally known as the Great Spring Show, is a garden show held for five days in May by the Royal Horticultural Society (RHS). Since 1912 it has been set in the grounds of the Royal Hospital Chelsea in Chelsea, London SW3. It has grown into the most famous flower and landscape gardens show in the world. The show attracts members of the British Royal Family as well as visitors from all continents. Highlights to the Chelsea Flower Show include the avant-garde show gardens designed by leading names with Floral Marquee at the centrepiece. The Show also features smaller gardens such as the Artisan and Urban Gardens.