Shaarei Shamayim (Gates of Heaven) has been the name of two Jewish congregations in Madison, Wisconsin. The first, dating to the 19th century but no longer in existence, built what is now the eighth-oldest synagogue building still standing in the United States. The second congregation, dating to 1989, is the sole Reconstructionist congregation in Madison. Madison's Shaarei Shamayim congregation was founded in 1856 by Jewish immigrants from Germany. In 1863, they built a synagogue that was designed by August Kutzbock, a recent German immigrant, in the Rundbogenstil style, a nineteenth-century German form of Romanesque revival.
Kutzbock also used this distinctive style for the Pierce and Van Slyke Houses in the adjacent Mansion Hill district. The building now ranks as the eighth-oldest surviving synagogue building in the United States. The Panic of 1873 forced the lease of the building to a Unitarian congregation, and in subsequent years it was repurposed to house the Women's Christian Temperance Union, other churches, and a funeral home.
It was added to the National Register of Historic Places in 1970, and in 1971, thanks to the efforts of local citizens, was purchased by the city, restored, and moved to James Madison Park. Now located at the corner of Gorham and Butler Streets, the building is used for concerts, weddings, and other gatherings. Beginning in late 2011, an independent partnership minyan began using the synagogue building for monthly Friday night Jewish prayer services.