The "Hungry Steps" of Akershus Fortress in Norway have a unique feature: they are 381 steps, but only 377 are counted. - Apparently.
Built in 1299, Akershus Fortress is a medieval castle in Oslo, Norway. Its design included a deliberate anomaly in the staircase's numbering, a quirk that was likely intended to thwart prisoners from counting their way to freedom. Despite its intended purpose, the "Hungry Steps" have become a well-known curiosity, a testament to the castle's complex and often quirky history.