How many storeys does this tower house have which David Gregory inherited in 1664?
David Gregory (physician) David Gregory (20 December 1625 – 1720) was a Scottish physician and inventor. His surname is sometimes spelt as Gregorie, the original Scottish spelling. He inherited Kinnairdy Castle in 1664. Three of his twenty-nine children became mathematics professors. He is credited with inventing a military cannon that Isaac Newton described as "being destructive to the human species". Copies and details of the model no longer exist. Gregory's use of a barometer to predict farming-related weather conditions led him to be accused of witchcraft by Presbyterian ministers from Aberdeen, although he was never convicted.
City Tower, Manchester City Tower (formerly Sunley House) is a 30-storey skyscraper situated in the Piccadilly Gardens area of Manchester, England. It is one of the highest office spaces currently available in Manchester, standing 107 metres (351 ft) tall. City Tower was completed in 1965, one of three buildings forming the Piccadilly Plaza complex which was constructed by the developers Bernard Sunley & Sons and designed by Covell, Matthews & Partners, 1959-65. It is currently the fourth tallest building in Manchester. The Tower has retail and leisure units on the ground floor and is Manchester's main radio transmitting station, which is located on the roof. The developer Bruntwood sold City Tower to the asset management company Schroders for £132 million in 2014 but kept their headquarters in the building.