Architecture
I went the other way - from architecture into IT (data warehouse programming to be exact). I loved the art of architecture but it's difficult business to be successful in. In 10 years as an architect, I was laid off 3 times with typically 4-6 months unemployment. And when the economy goes south, architects and construction get slammed. However, it was great to drive around San Diego and say "I worked on that ..." I miss architecture but I really like having a good solid paycheck.