Harvard Design Magazine - calling architecture and design fans... (urban, landscape, etc. included) for layperson as well as professional, academic or practitioner. It costs only USD 28 per year for student subscriptions in the US and Canada (though if you're a student you can probably get it at your uni, so it's a moot point, isn't it?). The online version has some freebie articles (for back issues as well as current). Font tiny, but pdfs available.

http://www.gsd.harvard.edu/research/publications/hdm/current/index.html