Boston's First Church, also known as the First Church in Boston, is a historic Unitarian Universalist church located in the Back Bay neighborhood of Boston, Massachusetts. Founded in 1630, it is one of the oldest congregations in the United States. The church has undergone several architectural changes, with the current building completed in 1868, designed by the architect Henry Hobson Richardson. The church is known for its beautiful Romanesque architecture and its prominent tower. It has played a significant role in the religious and social history of Boston, hosting various notable figures and events over the centuries. Today, it continues to serve as a place of worship and community engagement.