Poreč — Euphrasius' Mosaic Secret

Your journey in Poreč begins in Marafor Square, the ancient Roman forum of Parentium. Dating from the 1st-2nd century, this historic heart of the city was the convergence point of the two major Roman axes, the Decumanus and the Cardo. You examine the archaeological remains of Roman temple foundations, notably the Temple of Neptune and the Temple of Mars, dedicated to Mars Ultor, a protective deity of Roman colonies in Istria. Excavations in the 19th-20th centuries revealed Latin inscriptions dating from 200-300 AD, bearing witness to intense Roman life. It is here that your quest for Byzantine secrets takes root in the Empire's legacy.

You follow Decumanus Street, the main axis of the Roman cardo maximus, laid out since the 1st century. For approximately 300 meters through the old town of Poreč, you walk on medieval limestone slabs, partially restored in the 20th century. This street directly connected Marafor Square to the Euphrasian Basilica, serving as a religious processional route since the 6th century. As an architect, you observe how this ancient thoroughfare structured the city, preparing for your arrival at the edifice that will define your mission, a masterpiece of Venetian-Byzantine architecture.

Your main destination is the Euphrasian Basilica (Eufrazijeva bazilika), built between 553 and 554 under Bishop Euphrasius, a key period for Byzantine art in Istria. Inscribed on the UNESCO World Heritage list in 1997, this basilica is famous for its golden wall mosaics, the most remarkable on the Adriatic from the 6th century. Inside, the nave, 27 meters long and about 20 meters high, envelops you. The apse mosaics depict Bishop Euphrasius holding a model of the basilica, a rare practice in Byzantine art, proving his central role in this colossal project.

Around the basilica, you explore other key edifices. The Campanile, rebuilt in the 13th century after Venetian raids, rises approximately 40 meters in a Romanesque-Venetian style. Restored in 1999, it once served as a watchtower against Adriatic pirate attacks between the 12th and 15th centuries. The Baptistery of the Euphrasian Basilica, contemporary with the basilica (553-554), is a typical octagonal Byzantine structure. Its partially preserved floor mosaics bear witness to the baptismal pool for immersions, a specific Byzantine liturgical practice. Nearby, the Canon's House, a 14th-15th century medieval building in Venetian Gothic style, housed the archives of the cathedral chapter, documents that mention the restorations of Euphrasius's mosaics.

Your exploration concludes along Obala Maršala Tita, Poreč's waterfront promenade. Developed in the 19th-20th centuries, it offers panoramic views of Poreč Bay and the Adriatic islands. This waterfront was a strategic point for maritime trade since Roman times, extending the legacy of the ancient port of Parentium. This route has taken you from Roman foundations to the pinnacles of Byzantine art, revealing the superposition of eras that make Poreč a treasure of Istria. You take away an understanding of the ingenuity of Euphrasius and his architect, Maurus, who shaped this Roman and early Christian archaeological site, a UNESCO World Heritage site since 1997, a true thematic circuit in the history of Poreč.