Manasija Monastery is a Serbian Orthodox monastery located in the central part of Serbia, near the town of Despotovac. It was founded by Despot Stefan Lazarević in the early 15th century, and it is known for its impressive architecture, frescoes, and rich history. The monastery complex consists of the Church of the Holy Trinity, the Church of the Virgin, the refectory, the monks' cells, and a high protective wall with five towers.

The Church of the Holy Trinity is the most impressive building in the complex, and it is decorated with richly painted frescoes that depict religious scenes and figures. The frescoes were painted in the early 15th century by a group of Serbian painters led by Despot Stefan's court painter, Master Jovan. The Church of the Virgin was built a few years later, and it is also decorated with frescoes that were painted by Master Jovan and his followers.

The monastery's refectory is a spacious building that was used as a dining hall for the monks. It is decorated with frescoes that depict religious scenes and portraits of the donors who financed its construction. The monks' cells are located on the upper floor of the refectory, and they are simple rooms that were used as living quarters by the monks.

The high protective wall with five towers that surrounds the monastery complex was built to protect the monastery from Ottoman attacks. The wall is 870 meters long, and it has five towers that were used as observation posts and defensive positions. Today, visitors can walk on the wall and enjoy the views of the surrounding countryside.