Rocca Costanza is a historic fortress located in Urbino, Italy. Built in the late 15th century, it was commissioned by Duke Federico da Montefeltro as a defensive structure. The fortress features a unique pentagonal shape and is surrounded by thick walls, showcasing the military architecture of the Renaissance period. Today, Rocca Costanza is a popular tourist attraction, offering visitors stunning views of the surrounding landscape. The site also hosts various cultural events and exhibitions, making it an important part of Urbino's heritage and a symbol of the city's rich history.