Welcome to the Church of St. Nicholas. Once again, you are looking at a side entrance to a church rather than the main entrance (if you want to see that entrance and photos of the inside of this fabulous church, I suggest looking here: http://www.psalterium.cz/en/o_kostele_en.php). I don't really know what this entrance is used for though it does seem to be used sometimes. The rest of the time the stairs in front of it make a great resting spot for weary tourists!!