The ground level serves as an exhibition area, showcasing information on the different hybrids named after VIPs who have visited the garden. VIP Orchid Garden: located at the back of Burkill Hall, it displays hybrids of the most popular VIP orchids. Notable ones include Dendrobium Memoria Princess Diana, Dendrobium Margaret Thatcher, × Renantanda Akihito, Dendrobium Masako Kotaishi Hidenka, Dendrobium Elizabeth and Vanda Gloria Macapagal Arroyo. More than 100 celebrities, dignitaries, and visiting heads of states have been honoured by Singapore's orchid diplomacy program. Orchidarium: A haven for serious orchids enthusiasts, the Orchidarium houses natural species in a tropical setting. Tan Hoon Siang Misthouse: Tan Hoon Siang was a descendant of Tan Tock Seng, who was a philanthropist and founder of the Tan Tock Seng Hospital. The misthouse contains a colourful collection of different hybrids. It also has a small collection of fragrant orchids like Vanda Mimi Palmer. Lady Yuen-Peng McNeice Bromeliad House: Named in honour of its sponsor, the Bromeliad House showcases plants from the family Bromeliaceae, which includes the pineapple. The unique collection of bromeliads on display was acquired from Shelldance Nursery in the United States in 1994. Coolhouse: The Coolhouse tries to recreate the environment of a tropical highland forest and showcases orchids that are normally only found in the tropical highland areas. Rainforest The Singapore Botanic Gardens has a small tropical rainforest of around six hectares in size, which is older than the gardens itself. The rainforest and its bigger cousin at the Bukit Timah Nature Reserve are located within the Singapore's city limits. Singapore is one of the only two major cities with a tropical rainforest within its city limits, the other being Tijuca Forest in Rio de Janeiro. Ginger Garden Located next to the National Orchid Garden, this one-hectare garden brings together members of the family Zingiberaceae. The garden houses a restaurant called the Halia Restaurant. There is also a drop-off point along Tyersall Avenue as well as a waterfall. The garden was officially opened in 2003 and it took over the spot vacated by the previous Orchid Enclosure. Botany Centre and Tanglin Gate The two new blocks of offices and classroom in the upgraded Tanglin Core area are known as the Botany Centre. They house the: Library of Botany and Horticulture (including the Public Reference Centre); the Singapore Herbarium (International acronym: Herb. SING), housing 750,000 specimens; Orchid Breeding and Micropropagation; and education outreach and