434 Adsum , Winnipeg, MB, CA Located beside Maples Collegiate which is at the corner of Adsum and Jefferson Avenue. Diamond is accessed by driving up Jefferson Avenue going west from McPhillips Street (about 9 blocks to school from McPhillips). Make left turn off Jefferson Avenue onto Adsum. Proceed one block and turn left at entrance just after swimming pool and before reaching Manila. Diamond located behind the Maples Multiplex Hockey Arena. Click on red map button for more detailed directions.