I’ve visited Prague twice, eight years apart. I was fascinated by the Astronomical Clock on my first visit, so tried to find it on my second visit. I had the brilliant idea of climbing the Town Hall tower as surely I could spot it from the top. I looked from all four sides but couldn’t see it. When I descended, I asked the receptionist where I could find the astronomical clock, her response was “ you are in it. Just go outside and look up!” I felt very foolish, I can tell you.