I'm a retired control engineer working in the energy sector. I've had Mindstorm sets for many years but since retiring I have developed an interest in architecture and have been building with Lego for about 4 years. I have approx 40,000 bricks, (25,000 as assembled sets and 15,000 for free building). I model mainly buildings and skyscrapers but also enjoy space based models both real and fictional, (whose hasn't got a couple of Millenium Falcons !). I particularly like the large creator sets, ...