buildering.net Whether it's called buildering, urban climbing, structuring, or stegophily, the act of scaling manmade things not designed for climbing—be they dozens of feet tall or a more daunting 100 stories high—has its adherents. King Kong has nothing on these folks.
pdf-mags.com Free publications that exist only in PDF form strike a nice balance between websites and their glossy, printed cousins. Find new sources of design inspiration and news, as well as magazines on many other topics, at this useful site.
planetizen.com/node/34049 Planetizen offers a three-part podcast with Richard "Creative Class" Florida and journalist Bill Bishop, author of The Big Sort: Why the Clustering of Like-Minded America Is Tearing Us Apart. The subject? Demographic trends in U.S. cities.
pps.org/imagedb New York's Project for Public Spaces has been around since 1975. Not surprisingly, it has amassed a large image library. For a small fee, anyone can access the best ones for their own use. Categories include parks, streets, buildings, and amenities.