Open House - the weekend 'open doors' event - showcases all that is best about the capital's buildings, places and neighbourhoods. Now is your chance to visit our celebrated Angel Building in Clerkenwell - see the soaring atrium with artwork by Ian McChesney and the stunning rooftop views across London. Tours will be conducted by architects AHMM. Doors will be open: Saturday 17 Sept 10am - 5pm and Sunday 18 Sept 1-5pm