[2][3] The Gothic Revival Style Victorian building with Georgian Revival accents currently houses the Grass Valley Museum, at 410 South Church Street between Chapel and Dalton Streets, Grass Valley.

[7] On 1863-08-20, spearheaded by vicar-general Father Thomas Dalton,[8] five Sisters, including Mother Baptist,[9] arrived in Grass Valley to help the California Gold Rush miners' orphans.

The building is three stories tall, and was built at a cost of $19,856, including construction and interior furnishings.

[12] The plaque's inscription states: Mount Saint Mary's Convent and Academy Built by Reverend Thomas J. Dalton, the Sacred Heart Convent and Holy Angels Orphanage was dedicated May 2, 1865 by Bishop Eugene O'Connell.

[12][13] The plaque was placed on the building on October 28, 1972, by the California Department of Parks and Recreation.