Live within walking distance of it. You are correct, it is a beautiful building. i was a member of Calvary Evangelical Presbyterian Church on the Diamond in Butler, but transferred to a sister church in the Presbytery in New Castle.
Calvary has an 81' dome and is more Romanesque in architecture than it is Gothic. i hated it when they sandblasted the stone. It took away some character caused by generations of coal and wood smoke.