CJCLDS chapel in Cambridge
and this cathedral
Old South Church
both open and both mostly empty.
I entered each, sat or stood a while looking up and, with the aid of the Spirit in a setting that reminds me of God's light and reality, let the various clamors and questions in my mind settle and prioritize themselves. And then I walked out, knowing better what was most essential.
Sometimes it's a cathedral and sometimes it's just a front porch or the view out a window. Either way, that's how meditation seems to work for me.