A nuraghe is a really old, really cool kind of tower from the island of Sardinia, off the coast of Italy. It's made of big rocks or stones and it looks like a castle or something from a fairy tale. People built nuraghes all the way back in the Bronze Age, so that's over 3,000 years ago! It's a mystery why anyone built nuraghes all those years ago, because we don't know who built them or why. Nuraghes have been around for a long time and they can still be seen today, all around Sardinia. They are very special and are important to the culture of the island.