The National Sanctuary of our Sorrowful Mother, popularly known as The Grotto, is a Catholic shrine and sanctuary in Portland, Oregon, United States. Located on Sandy Boulevard at Northeast 85th Avenue and occupying an area of 62 acres (25 ha), the sanctuary is set both at the foot of and on top of a cliff. A large meditation hall whose main chamber is at clifftop level extends down to the foot of the cliff; the cross on the hall is visible many miles away. In addition to a church, there are several thousand feet of trails, including a trail of the Stations of the Cross, along which the faithful may pass in contemplation.