This is my latest Great Ball Contraption module which is built to a design by Matt Norman at greatballpit.com where the plans are freely available.
The Micropolis Planning Department seem to be the only part of the local government which is outgrowing their existing premises. So they commissioned a state-of-the-art new development for themselves – no expense spared! One of the things which was demanded of the architects was that the block should have a 360 degree panoramic view acros the city. The structural engineers have come up with a cunning plan – to make all three towers rotate simultaneously so that nobody can say they can’t get a good look at the streets below.