Poland is home to numerous castles that reflect its rich history and architectural diversity. Many of these structures date back to the Middle Ages and were built for defense, residence, or administrative purposes. Notable examples include the Wawel Castle in Kraków, which served as a royal residence, and the Malbork Castle, the largest brick castle in the world, originally constructed by the Teutonic Knights. These castles often feature impressive stonework, towers, and fortified walls. They are popular tourist attractions, offering insights into Poland's past and showcasing various architectural styles, from Gothic to Renaissance. Visitors can explore their grounds, museums, and historical exhibits.