Singapore is known for its orchids, and the National Orchid Garden is one of the best places to see them. Singapore's National Orchid Garden is home to the world's largest collection of tropical orchids - more than 1,000 species, including one named after Princess Diana. The National Orchid Garden is part of the Singapore Botanic Gardens. Admission is $5 for adults and $1 for students or senior citizens. Several buses and taxis serve the area. Parking is also available.