The rotating observation tower at the Glasgow Science Centre reopened yesterday, two-and-a-half years after technical problems caused it to close. The bearings on which the £10m structure turns failed when oil and water flooded the basement. The 400 ft tower, designed by Building Design Partnership based on a concept by Richard Horden Architects, was the centrepiece of Scotland’s largest Millennium project and was originally opened in 2001. Main contractor on the tower was Carillion and structural and services engineer was Buro Happold.