Mentioned by Lonely Planet Top Choices
Top things to do in London, England
"Sprawling Hampstead Heath, with its rolling woodlands and meadows, feels a million miles away – despite being approximately four – from the City of London. Covering 320 hectares, most of it woods, hills and meadows, it's home to about 180 bird species, 23 species of butterflies, grass snakes, bats and a rich array of flora. It's a wonderful place for a ramble, especially to the top of Parliament Hill, which offers expansive views across the city."