This is the crypt of Center Church on New Haven Green in Connecticut, my home state.
It kind of looks like a graveyard, but with bricks instead of grass and four walls and a ceiling instead of fresh air. That’s because it used to be a graveyard, or a small portion of one. When they built the Center Church in the early 19th century, they built the church on top of an existing burial ground, creating a crypt beneath the church where part of the old cemetery could be preserved.
Here lie 137 identified New Havenites under headstones dating from 1687 to 1812, (including some notables, like Benedict Arnold’s first wife), and what are believed to be the remains of about 1,000 unidentified others.
The brick floor is a nice touch.
You can read more about the crypt and the history of New Haven Green here and here. If you’re in the area, you can even visit!
Image Source: Wikipedia.