- Webwork by River Welcome to the Grand Summit Hotel, a shining star in the town of Summit since 1868. Set among the rolling hills of historic Union county, fashioned by expert European craftsmen, the Grand Summit hotel has provided a haven of friendly, personal service in the tradition of the finest country inns of old for over a century.. 570 Springfield Avenue, Summit, NJ 07901 Phone: ...www.grandsummit.com