London is the capital and most populous city in both England and the United Kingdom. London is a leading global city in the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism and transportation. In 2012, London became the first city to have hosted the modern Summer Olympic Games three times. London is one of the leading tourist destinations in the world and in 2015 was ranked as the most visited city in the world with over 65 million visits. As of 2016, London is the world top city destination as ranked by TripAdvisor users.