Complex sentence: Its long façade engulfs the small Basilica Church of San Lorenzo in Damaso, the Cardinal's titular church, that sits to its right, with the palatial front continuing straight across: the entrance to the church is on the right side of the facade.
Split into simpler sentences: Its long façade engulfs the small Basilica Church of San Lorenzo in Damaso, the Cardinal's titular church, that sits to its right, with the palatial front continuing straight across. The entrance to the church is on the right side of the facade.