Armed policeman guards Number 10 Downing Street, official home of the British Prime Minister, London, UK

Armed policeman guards Number 10 Downing Street, official home of the British Prime Minister, London, UK

Policeman watches red carpet being laid outside number 10 Downing Street, the home of the Prime Minister, London, UK.

Arundells, the former home of Sir Edward Heath, a British Prime Minister, Salisbury, Wiltshire, England, United Kingdom, Europe

Prime Minister's London residence, 10 Downing Street, Westminster, London, England, United Kingdom, Europe

Number 10 Downing Street, official home of the British Prime Minister, London, United Kingdom

The intricately carved facade of the Nathmal Ki Haveli home, former residence of the prime minister of Jaisalmer and major tourist attraction in Rajasthan, India, Asia

Ho Chi Minh Mausoleum, Hanoi, Vietnam, Asia