Holy Trinity Episcopal Church (Old Swedes), Wilmington

Holy Trinity Episcopal Church, also known as Old Swedes, is a historic temple and the second church in Wilmington's Trinity Parish. Built in 1698–99 in the territory formerly known the colony of New Sweden, it is considered to be the city's oldest religious site. The church was consecrated on Trinity Sunday, June 4, 1699.

The building is constructed from local blue granite, with the entrance tower made of Swedish bricks that had been used as ship's ballast.

The church is located on the site of the Fort Christina's burial ground, which dates to 1638, and as such claims to be "the nation's oldest church building still used for worship as originally built". There are reportedly over 15,000 burials in the churchyard. Lutheran church services were held in the Swedish language here well into the 18th century.

Holy Trinity in Wilmington has housed an Episcopal parish since 1791 and is now part of the Episcopal Diocese of Delaware.

Being a fine example of Swedish-American architecture, it was declared a National Historic Landmark in 1961. The church is currently among the few surviving public buildings in Wilmington that reflect the Swedish colonial effort. It is considered part of First State National Historical Park, and is often visited by tourists, remaining open for both tours and religious activities.