Gibraltar Gardens is a beautiful, historic six-acre estate nestled in the horticulturally rich Delaware Valley and designed by Marian Cruger Coffin in 1916. Colleen spent three years curating the garden and was directly involved in the massive historical restoration in 1999. Upon completion of the restoration, Colleen cared for every horticultural aspect of the garden, created programs and protected the historic integrity of the plantings and vision.