The Fullerton Hotel Singapore is a luxurious sustainable hotel located in a historic building that was once the General Post Office. The hotel has preserved the building's architectural heritage while incorporating sustainable practices. It has achieved the Green Mark certification for its energy-efficient design and operations. The Fullerton Hotel Singapore has implemented various initiatives to reduce its environmental impact, such as energy-efficient lighting, water-saving fixtures, and a waste management system. The hotel also supports local communities and engages in corporate social responsibility activities. Guests can experience the charm of a heritage building while staying in an environmentally-conscious hotel.