Heritage Open Day: Discover Weymouth’s Regency church, a gem hidden in plain sight in the town centre. Opened in 1817, this Grade I Regency Church is known for its historical and architectural features. It's home to a 300 year-old altarpiece representing the Last Supper painted by Sir James Thornhill. The church also has connections to Sir Christopher Wren an Sir Samuel Mico, and with Princess Charlotte, granddaughter of King George III.