The center, fluviale important node, was founded in 1140 da Gervino, Bishop Earl of Concordia, that in that year granted autonomy to “portolani” and merchants / fishermen of Portsmouth. These, set up as an open joint, they built the city walls, outcome of a unitary design, which supported the Axis port on the Lemene to service the two shopping streets towards Oderzo and Friuli. This tells the system to plug triple and type “Byzantine”, then mitigated by the gradual prevail terrafermiero. In 1420 the city passed by the Patriarchate of Aquileia to the domain of Venice, increasing its trade. The city was accessed for five doors of which three, San Gottardo, St. Agnes and St. John, still exist. The approval process was accelerated by the urban demolition of the wall fence in the early twentieth century, the development of suburbs and the reclamation of the meanders, marshes and valleys, that once encircled the historical settlement.
- Cinta Muraria (externally visible near the Porta S. Agnese and the Captain's Tower).
- Porta San Gottardo (only externally visible).
- Porta Sant 'Agnese (Tuesday and Saturday – from 1 October to 31 May from 15,00 to 18,00 – from 1 June to 30 September from 16,00 to 19,00 – Thursday from 10,00 to 12,00 – Sunday from 9,00 to 12,00 – closed on Mondays, Wednesday, 1January – Easter – 1May and 25 December).
- Porta San Giovanni (only externally visible).
- Municipality (open during office hours, consistent with the institutional activities – Monday to Friday 10,00 – 12,00. Wednesdays from 15,00 to 17,00).
- The cockpit with crane (Pilacorte) (open).
- Cathedral of St. Andrew (open when there are no religious ceremonies).
- 15 August – descent of some “Aquaculture Development” from Concordia in Portogruaro the pastor and other authorities in costume at the church of the Madonna of the Fish.
- Fiera di S.Andrea – 30 November.
- Other events are in the site.
The visit to the city starts starting from the site of the demolished port S. Nicholas. Via Garibaldi is already (then Via Cavour and Via del Seminario) You can not grasp the structure of the river town, consists of two main axes that developed on opposite sides of the river Lemene, connected by 4 bridges. La cinta muraria, built in 1265, this core contained, you learn 4 doors to the extreme south and north of 2 roads. The beauty of the city is still determined by the combination of land and water, which has created a sinuous structure of buildings, Overlooking the dual, on the Venetian model, towards the street and down to the river, fundamental element of the economy of the village. The walls are only 3 door, but you have kept the channels of the ditches, clearly visible from the public gardens of Villa Marzotto, Paleontological Museum headquarters “M. Gortani”. Now in Via del Seminario, cross on the left the National Museum of Concordia College and the palace of the bishop's (XVIII Secolo). You then come in via Cavour, bounded on the south by the Gothic Gate S. Agnese realized in 1243 – here you can see some remains of the walls – and you cross the bridge on the Lemene fortified via Rake, “door acqua” which was adjusted by the passage of boats, controlled through the slots; then you reach via the Martyrs of Liberty (of Haberdashery), bounded on the south by the Port S. John. the end of the twelfth century. A brief digression out port allows the visit of the Fondaco of Salt on the right, over the moat and, just ahead on the left, the fourteenth-century Church of S. John. Inside the door, go along the colonnaded main street of the city: are to note the fresco decoration of tradition terrafermiera, which is preserved in different facades, and the widespread reuse of stone Roman (Subscriptions, sculptures, friezes), origin of Concordia. At the center of the street is the square of the Republic (Greater) bounded by the beautiful Town Hall, Gothic building, in red brick with Ghibelline battlements and mullioned windows with pointed arches, in front of which lies the beautiful wellhead GA. Pilacorte (1494), adorned with two bronze cranes, symbol of the city. Behind the palace, sul Lemene, there is the most striking and the productive heart of the city: un vero “Grand Canal” water clear and fast, on which the loggia facing the Fish, with the Oratory of the Madonna, the “acqua door” of noble palaces and fifteenth Mills S. Andrea. The adjoining the cathedral square is dominated by the imposing Cathedral of S. Andrea (works by Palma il Giovane and Pomponio Amalteo), built between 700 and 800 on the site of the Romanesque church, of which remains on the left the tall bell tower. The route then continues on Main Street, ending spectacularly in the north with Port S. Gotthard, made towards the 1150.