| St. Hilary's Mission Church | |
| Coordinates: | 37.8783°N -122.4561°W |
| Built: | 1888 |
| Added: | February 3, 2020 |
| Refnum: | 100004935 |
Old St. Hilary's Landmark is a former mission church place of worship and now a historic landmark owned and maintained by the Belvedere-Tiburon Landmarks Society, Tiburon Peninsula, Marin County, California, United States.[1] The landmark is situated on the flank of the Tiburon Hills, an area characterized by serpentine soils and hence has a distinct plant community. The area surrounding the church is a Marin County protected area, the Old Saint Hilary's Open Space Preserve. The church building was listed on the National Register of Historic Places in 2020.[2]
An endangered wildflower species, Streptanthus niger, commonly called the Tiburon jewelflower, grows near the church.[3]