Lisbon. There may be exceptions, but I can't think of any office building with more than just a few windows lit late at night. It's probably more due to cost-sa

Lisbon. There may be exceptions, but I can't think of any office building with more than just a few windows lit late at night. It's probably more due to cost-savings than environmental concerns, though. The offices I worked on in Brussels and Luxembourg also went dark, but I'm not sure if that was common throughout the city.