The huge heart was the first part of the Unlockiong Peterborough festival that will continue through the autumn and winter.
Along with providing a stunning frame for the Guildhall and the Cathedral, it provided a spectacular stage for aerial performers to show off their skills.
A spokesman for the organisers said; “The fabric heart is the result of recent developments in fabric technology and 3D stress test modelling; fluctuations in the internal air pressure enable the heart to lift the aerial performer while modulations in air flow give the impression of a heartbeat.”
A range of other events are planned in Cathedral Square as part of the festival through the year.
Halloween Events - Saturday 30th – Sunday 31st October
Urban Street Canvas Games - Saturday 13th – Sunday 14th November
Late November Events - Saturday 27th – Sunday 28th November
Christmas Events - Saturday 11th – Sunday 12th December
Christmas Finale Show - Saturday 18th – Sunday 19th December
All events start at 3pm in the square.