Brandywine Mountain Ridge by Monarch is a premier provider of assisted living and memory care services in Watchung, NJ. Located in Somerset County, Brandywine Mountain Ridge is scenically situated in the heart of one of Watchung's finest neighborhoods. Brandywine Mountain Ridge by Monarch is nestled in the picturesque landscape of the Watchung Mountains and offers breathtaking vistas overlooking the New York City and New Jersey skylines.