Join us for another art installation in St Mary’s Church, developed by Heinrich & Palmer who previously brought us the Ship of Gods. Created specifically for St Mary’s Church, Once A Sea reflects back to 35 million years ago when Portsmouth was covered by sea, in part inspired by the flints which make up the outside of the church. The exhibition combines archival imagery, high-speed film, microscopy, and 3D laser scans of the church to create a millennia-spanning, awe-inspiring projection.…