In medieval times, Vagliendola was the Greek-Byzantine district. It is crossed by a road that – becoming Via Annunziatella and a town gate, leads to Via Maestra dei Villaggi, the main road that connects the town to the outerlying hamlets.
The main church was dedicated to San Nicola dei Greci. The first records of it date back to 1039; a church dedicated to the worship of San Biagio was later added. For a long time it belonged to the Abbey at Montecassino, together with the Churches of S. Biagio, S. Benedetto, S. Croce and S. Maria, all located in the district.
The current S. Biagio comprises a single nave with a vaulted ceiling and Baroque-style decorations. Inside the church has some Renaissance panels with religious depictions and a ceramic floor dating back to the end of the 18th century. The Moorish bell tower was built at the end of the 19th century. The church was home to the Confraternita della SS. Trinità from 1577, and the brothers’ benches can still be found inside the church.
