Medieval structures refer to buildings and architectural designs that were prominent during the Middle Ages, roughly from the 5th to the late 15th century. These structures often included grand castles, cathedrals, and fortifications, showcasing the era's focus on defense and religious devotion. The use of thick walls, narrow windows, and intricate stonework characterized many of these buildings, reflecting the skills of medieval craftsmen. One of the most iconic examples of medieval architecture is the Gothic cathedral, known for its soaring spires and stained glass windows. Another important structure is the keep of a castle, which served as a stronghold for lords and their families. Together, these medieval structures tell the story of a time when architecture was both functional and symbolic.