Ostrov Church has the most representative and best preserved medieval bell tower in Țara Hațegului: with windows in gothic style and hand-carved corners in massive stone.
The mural painting from the bell tower is also very beautiful – for its artistic qualities it is considered to be one of the most valuable paintings from medieval Romania.
The church has an unusual “fence”. This is nothing else but a collection of Roman stones scattered around the church. It is said that these massive carved stones come from the ruins of ancient Ulpia Traiana Sarmizegetusa and were brought here in the Middle Ages by one of the local noblemen.