The Astronomical Clock itself is quick to see: every hour on the hour the apostles pop out, a skeleton rings a bell, and a small crowd cheers. It lasts about 45 seconds. What most people actually remember is the shoulder-to-shoulder scrum in Old Town Square. Expect to stand packed among tour groups, phones held high. The clock looks impressive from a distance but the details are hard to appreciate unless you go inside the Old Town Hall. The interior tour shows the clock mechanism, gives you a view over the square from the tower, and includes some medieval rooms. It’s interesting if you like mechanical history or want the elevated photo, otherwise the street-level show is enough.
Best time is early morning (before 9 am) or after 8 pm in summer; the square is calmer and the light is better for photos. Spring and autumn beat the July heat and winter cold. Expect to pay around €10–20 for the tower ticket; guided walking tours that include the interior and a bit of the Jewish Quarter run €25–45 per person. Skip the paid “VIP” viewing platforms or costume photo ops. If crowds bother you, just watch the clock once from the square, grab a coffee nearby, and move on to something less hyped.
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