The Riverside Church in the City of New York. We are an interdenominational, interracial, international, open, welcoming, and affirming church and congregation.At Riverside, membership is more than a title, the right to vote on church business, or to serve as a lay leader. It is about responding to God's call. If you are joining another church, the pastor will contact your previous church and ask for a letter of transfer. Riverside Church is an interdenominational church in the Morningside Heights neighborhood of Manhattan in New York City, United States. The Riverside Church of New York announced this week plans to close its Weekday School after 95 years of caring for local children. Do you want new ways to welcome members into your church? Check out these top church membership welcome letter templates and best practices. Address: 22495 Van Buren Blvd.