Resava Cave is one of the oldest and largest caves in the country. Taking a trip down into the cave you’ll be treated to a staggering display of halls filled with flowstone waterfalls, stalactites, and stalagmites. As you go, you’ll be shown named formations like the Organ, the Bell, and the Hung Sheep. Not too far away is your second stop, Ravanica Monastery. Built in 1377 for Prince Lazar of Serbia who was later buried there, this Serbian Orthodox Monastery has several layers of importance. The interior is lined with medieval frescoes that show just how well-preserved the monastery is.