Kastro is a term that often refers to a fortress or castle, particularly in Greece. These structures were built for defense and protection, typically situated on elevated ground to provide a strategic advantage. Many Kastro sites date back to ancient times and showcase impressive architecture, reflecting the historical significance of the region. In addition to its historical context, Kastro can also refer to specific locations, such as the village of Kastro on the island of Sifnos. This picturesque village features traditional Cycladic architecture and offers stunning views of the Aegean Sea, making it a popular destination for tourists seeking to experience Greek culture and history.