Located in London, England, 10 Downing Street, often referred to as simply, "Number Ten," acts as the residence and business offices for the British Prime Minister. The British Cabinet holds their meetings at Number Ten and it has acted as the governmental headquarters for over 100 years.Official Site: 10 Downing Street
Green House
To reduce carbon emissions, 10 Downing Street, its residents and employees have instigated several energy-saving and environmentally-friendly practices, including recycling waste whenever possible, obtaining energy from renewable sources, driving Hybrid cars and composting natural waste.10 Downing Street: How green is Number 10?