Constructed in the mid-13th century to protect the growing city from invasion by the Tatars, the castle changed hands many times over the centuries. After a modern-day rebuilding effort, today the defense walls stand once more, encircling the stone chapel of St. Philip and St. Jacob, the Great Palace, and fortified towers. The Oltar Domovine (Homeland Altar) is a memorial to all the war dead of Croatia, made of stone from regions across the country and bearing an eternal flame.
The castle sits in the middle of Medevinca Nature Park, a popular Zagreb destination for hiking, mountain biking, and off-road safaris. Several organized tours combine outdoor adventures here with a visit to the castle.