On the ground-floor of Rigo Palace built from the15-18th century is situated the Novigrad Collection of Stone Monuments with an unique collection of 93 stone monuments from the antique and medieval period.Tto a lesser degree it consists of various architectural elements such as door and window frames, coat of arms etc. and substantially of elements from the liturgical furniture such as altar partitions, parts of ciboriums, pilasters and capitals.
The most important part of the collection are the stone monuments from the early medieval period such as the hexagonal ciborium of Bishop Mauro from the end of the 8th century, one of the rare examples of the carolingian art on this region that emphasizes the role of the city of Novigrad as a seat of the early frankish administration during the reign of Charlemagne. This monuments give evidence of the importance that Istria and Croatia had in the West European context of those days. Due to the bad state of preservation of the monuments the collection was removed in 1994 from the exhibition space (the ground-floor of Rigo Palace), taken care of and put under a complete improvement and conservation procedure under professional supervision.
The bell tower of the church of SS. Pelages and Maximilian was erected by the family company of Giorgio Giurco in 1883. This self-standing bell tower (campanile) is 45 m high and all built in carved stone blocks. It's articulated with semicircular doors and strengthened with buttress walls in the lower zone, while in in the upper zone it's articulated with three narrow windows, the clock and three horizontal cornices. The belfry if opened with triforium window and above it the pyramidal spyre built under the influence of the Venetian Campanile is situated. On the top of the tower is the statute of St. Pelages made of wood overlaid with bronze sheet.
The perserved city walls of Novigrad correspond in their perimeter to a lesser degree with the supposed screen of the late antique fortified settlement, at the north and south of the Porta Terraferma. They surround the historical core of the city situated on the peninsula and they are mostly medieval with serrate crowns from the middle of the 14th century strengthened with circular Renaissance towers and by the ex-city gates an older quadrangular tower is perserved. During the invasions of Croats and Saracens in the Middle Ages the walls were renovated and strengthened but they mostly gained their present appearance during the venetian administration when most of the reconstruction works have occured of which many built in coat of arms of the Venetian podesta give the evidence. The walls were constructed by local masters out of carved stone adorned with the characteristic merlature. The older medieval/renaissance systems have been rebuilt and connected in bigger baroque unities during the 18th century.
The stable scaffolding 42 m high, with the upper part of 13 m adjusted at the shape of the pyramidal spyre has enabled the approach to the statue of St. Pelages and its improvement at the top of the bell tower. The damaged stone blocks were removed from the cornice of the pyramidal spyre, replaced with the corresponding stale blocks and the weakened places injected with the epoxy injection mixture. The external surfaces of the tower walls are protected by means of the hidrofobic coat.