We almost missed this. There are signs everywhere that the gates will be closed at 6PM. The last thing we wanted to do was sleep in our car. However we found a parking lot outside the gate and actually made it down to the Abbey; spent some time there, and made it back before the gate was secured. This is a beautiful site. It is well worth a visit. The walk is easy, paved, and less than a half mile (about 800 yards) from the gate.