St Michael's Church has about 4,000 people buried under its floor, and about twenty of them dried into mummies instead of decaying. No emperor lies among them. This was one of the imperial court's own parish churches, facing the Hofburg across a small square, so the dead below are the court's staff: chamberlains, clerks, shopkeepers and their families. Hundreds of coffins stand in the brick chambers, some of them open, with wigs still on the dried bodies.
Italian priests called Barnabites took the church over in 1626 and spent the next century cutting more chambers; the last coffins went down in the 1780s. The church above is open all day and you can walk straight in, and inside it is dark, with a wall of white figures spilling down the far end above the altar. Getting below is another matter: you go down only with a guide, by narrow stone stairs into a cold draught, and people do find it hard. Upstairs, a mass is said every evening.