8202 mansion av, Madison, WI USA
Library mall has some decent rails, ledges, and gaps. The main "stage" has three huge stairs (equivalent of 6 or 7 normal stairs) that make a great little gap. There are also some 5-stairs and 8-stairs. Near the "stage" is a bunch of waxed marble ledges. They're a part of the Historical Society building, and quite hard to miss. There are banks and square rails at the nearby Humanities building as well. Also a few random concrete ledges and sculptures that you can use your imagination with…
Easy as hell to find. Just go to the east end of State Street and you're pretty much there. State street comes to a "T" intersection with Lake Street; just continue across Lake Street as if State street kept going.