If this is not blistered cup fungus (Peziza vesiculosa) then it is a relative.
Blistered cup grows in clusters on rich soil, manure or woodchip. People seem to commonly find it in their gardens on composted areas. 40 more words
City Confectionery, 105 Shoreditch High Street, Borough of Tower Hamlets, London E1, 2006 & 2002 • Maybe the flat-dweller crept in under the angled shutter. The top photo is from 2006, when it was closed and looking like an art installation, and below is 2002 when it was open. 18 more words