Gloria Dei Church, known locally as Old Swedes', is a historic church located in the Southwark neighborhood of Philadelphia, Pennsylvania, at 929 South Water Street, bounded by Christian Street on the north, South Christopher Columbus Boulevard on the east, and Washington Avenue on the south. It was built between 1698 and 1700, making it the oldest church in Pennsylvania and second oldest Swedish church in the United States after Holy Trinity Church in Wilmington, Delaware.

Holy Trinity Church, also known as Old Swedes, is a historic church at East 7th and Church Street in Wilmington, Delaware. It was consecrated on Trinity Sunday, June 4, 1699, by a predominantly Swedish congregation formerly of the colony of New Sweden. The church, designated a National Historic Landmark in 1961, is among the few surviving public buildings that reflect the Swedish colonial effort. The church is considered part of First State National Historical Park. The church, which is often visited by tourists, remains open for tours and religious activities.