One of my favorite sculptures by one of my favorite sculptors is "3-Way Plug" by Claes Oldenburg, in a little pocket park to the right of the main building at the Allen Museum in Oberlin, seen above. 1 of 3, constructed in 1970, this is a great pop piece in a perfact setting. Check it and the Allen and Oberlin all out - great scene! BTW, while there, they have a Frank Lloyd Wright [1], and Oberlin's Conservatory of Music and the College's King Building were designed by World Trade Center architect Minoru Yamasaki to name a few highlights.
Links:
[1] http://www.oberlin.edu/amam/fl wright.html
[2] http://li326-157.members.linode.com/art-of-the-day-spitball-by-tony-smith/art-of-the-day-100-year-tree-by-ann-hayes
[3] http://li326-157.members.linode.com/art-of-the-day-spitball-by-tony-smith
[4] http://li326-157.members.linode.com/art-of-the-day-angela-keslar