Someone sharper on the history of art (or the history of this building, which is now occupied by the Alchemist Bar, on the corner of Na Mustku and Provaznicka), would know the century of this ceiling. I'm guessing it's pre-18th Century, probably pre-17th Century, but beyond that I'm just guessing. I was happy to see that it was preserved, though, even in a chain restaurant like Costa Coffee. This is actually on the 1st (or in American terms, the 2nd) floor, although Costa Coffee used both floors. Today, the ground floor is used by the Twenty4Seven Wine & Food Store, one of many similar businesses that emerged in the wake of Covid-19, and the partial rollback of tourist-oriented businesses in the older neighborhoods of Prague.