King John's Palace, Southampton

King John's Palace is a fascinating ruin of a Norman merchant's house located in the heart of Southampton, England. Originally built in the late 12th century, this historic site was mistakenly believed to have been used by King John, giving it its name. The structure features remnants of its original architecture, including round-headed windows and archways, and is notable for containing what may be Britain's earliest surviving gunports. Over the centuries, it has served various purposes, from a merchant's residence to part of the town's defensive walls. Today, it is integrated into the Tudor House Museum, offering visitors a glimpse into the city's rich history and architectural evolution.