The old part of the town was fortified (12th-13th c.). The Prince's Palace (13th c.) stands on the northern side of the Municipium Arba Square, turned during the Gothic (two windows) and Renaissance (double window) periods into a massive three-storey building, to which a two-storey wing (with a beautiful balcony) towards the sea was attached.
The inner court of the palace accommodates a collection of stone monuments including finds dating from the Roman period to the Renaissance. Passing through the former Morska Vrata (Sea Gate), one reaches Plokat, where a granary (fondaco) and loggia - an open portico with six Renaissance columns were erected in 1509.
The monumental portal of the Crnota Palacefrom the mid-15th century (decorated by Andrija Alesi and Juraj Dmitrov) is situated in Radiceva Street, offering a nice view on the Bay of St. Fumia and the Frkanj peninsula.
At the corner of Radiceva Street and Freedom Square (Trg slobode), a block of houses of the Galzigna family, of Renaissance morphology, stands. Upper Street (Gornja ulica) leads along the crest of the peninsula; the church of St. Andrew, with a monastery of the Benedictine nuns, founded around 1020, is to the right; the church assumed its final form during Renaissance; the Romanesque bell tower dates from 1181.

A 26-m high bell tower of the cathedral of a Lombardian type (around 1200), covered with a pyramid (15th c.) rises in the middle of a small square. The church of St. Mary the Great, a three-nave Romanesque basilica with three apses, is opposite the bell tower.
It was consecrated by Pope Alexander III in 1177. The ciborium above the main altar of the church was erected in the 11th century.
Although reconstructed at the end of the 15thcentury, it represents the only in situ preserved example of the pre-Romanesque altar superstructure on the Croatian coast.
The choir stalls from 1445 are placed in the sanctuary. The baptismal font and the rustic Pieta in the lunette of the main portal were made by Petar Trogiranin in 1514.
The interior of the cathedral gradually assumed a Baroque aspect in the second half of the 18th century; altars were constructed (valuable marble intarsias on the antependium, depicting St. Christopher and the Virgin Mary). The altarpiece in the main apses is attributed to a painter from Rab, Matej Poncun.

The extreme cape of Kladanac accommodates a monastery of Franciscan nuns. The front of the monastery is adorned with a relief representing St. Anthony the Abbot and the year 1541.
The only preserved fragment of the original church of St. Anthony the Abbot is the Gothic vault in the sanctuary; the engraved altar (15th c.) is decorated with the painting of St. Anthony.

The church of St. Justa (1573-78) is situated in Upper Street (Gornja ulica); its bell tower dates from the 1672.
Today the church hosts an sacral art exhibition, including the portable little altar, donated to the town by King Koloman, fragments of the illuminated evangelistary from the 11th century and the silver-plated reliquary for the head of St. Christopher (beginning of the 13th c.); the polyptych by Paolo Veneziano; a Renaissance terra cotta of the Mother of God with Christ from the 15thcentury; several altar paintings from the 16th to the 18th century.

Not far from the church of St. Justa lies the small church of the Holy Cross from the 16th century, with Baroque stucco work from 1799 (by Clemente and Giacomo Somazzi).
The ruins of a monastery, occupied by the Benedictine nuns from the 11th century, and by the Franciscans from 1298 to 1783, are by the church; in 1786 the monastery was converted into the Bishop's Residence (Vescovato), and on the abolition of the diocese in 1828, the monastery was abandoned and exposed to dilapidation.
The complex comprises the ruins of the church of St. John the Evangelist only the bell -tower from the 12th century survived (restored in 1933). The Summer Stage, situated within the town walls, is attached to the complex of St. John (the present Archaeological Park).

The passage through the tower of St. Christopher (Galjarda) with a guard-house leads to Komrcar Park, one of the most beautiful parks on the eastern part of the Adriatic coastline, landscaped in the 1890s, on the total area of 16 hectares, by Juraj Belia (Aleppo pine, Primorje pine and black pine, holm oak, spruce, cypress).
The ruins of a Franciscan monastery from 1491 are found at the north-eastern rim of the park, now the town cemetery. The church of St. Francis from 1491, a building in the mixed Gothic and Renaissance style, the tomb of the Spanish painter Juan Boschetus, who died in 1523, is today a graveyard church.

Middle Street (Srednja ulica) leads from St. Christopher Square to the Loggia (Loza). At the right corner, near Bobotine, stands a monumental palace called Dominis (end of the 15th c.), with richly decorated Renaissance portal and windows (the first floor has a late Gothic window).
The birth house of Markantun de Dominis. - On the opposite side of the street, the small Baroque church of St. Anton (1675), with a rich marble intarsia on the antependium and the painting of Our Lady with Child (Venetian School, 17th c.) is situated.
Farther, on the left-hand side, is the Nimira palace (16th c.), built in the transitional Gothic-Renaissance style (portal with a coat of arms).
The finely ornamented front of the Galzigna Palace (Renaissance portal, a late Gothic window), opposing the wing of the Prince's Palace, stands at the beginning of Lower Street (Donja ulica).