Mönchengladbach is a medium-sized town in the west of Germany, very close to the Dutch border.
When heading north or south, the best place is probably the onramp "Nordpark/West" at the A61. You can easily get there by Bus. Just take number 013 or 023 to "Vorster Straße". From there it's just 5 minutes walking.
There is usually quite a lot traffic and enough space for cars to stop.