Trogirska katedrala sv. Lovre je jedan od najznamenitijih trogirskih spomenika i UNESCOva zaštićena svjetska baština. Na ovoj su građevini uočljivi stilovi od romanike do baroka, a u njoj su i vrijedna umjetnička djela.
Katedrala je većinom izgrađena u romaničkom stilu (majstori Stjepan i Matej) do 1251. god., dok je gotički svod izgrađen u 15. st. Gradnja je završila 1589. god. dovršetkom zadnjeg kata zvonika u stilu manirizma arhitekta Trifuna Bokaniča (1575.–1609.), za čiju je gradnju trebalo skoro dva stoljeća. Prvi je kat, djelo Matije Gojkovića, građen u gotičkom stilu (nakon što su je mlečani uništili 1420. god.), drugi ima obilježje venecijanske cvjetne gotike 15. stoljeća (s prozorima koji podsjećaju na prozore Ca' d'Oro). Andrija Aleši 1460. godine dobiva zadatak da uz nadsvođeno predvorje katedrale sv. Lovre dogradi krstionicu. Istovremeno kada je započela izgradnja krstionice Aleši radi i na preoblikovanju katedralne sakristije. Gradnja krstionice trajala je trajala do 1467. godine. Andrija Aleši i Nikola Firentinac 1468. god. potpisuju s trogirskim kaptolom ugovor o izgradnji kapele sv. Ivana Trogirskog. Treći kat zvonika je dovršen krajem 16. stoljeća, a četvrti piramidalni završetak krase četiri manirističke skulpture mletačkog kipara Alessandra Vittoria (1525.–1608.).
Radovanov portal je glavni portal katedrale i ujedno najznačajniji srednjovjekovni portal na istočnom Jadranu te u ovom dijelu Europe. Nazvan je po njegovu autoru Majstoru Radovanu koji ga je isklesao 1240. godine i potpisao s per Raduanum. Skulptura portala karakterističan je primjer gotičkog realizma i humanizma, ali s obilježjima starijeg romaničkog stila.
The Cathedral of St. Lawrence (Croatian: Katedrala Sv. Lovre) is a Roman Catholic triple-naved basilica constructed in Romanesque-Gothic in Trogir, Croatia. Since its construction lasted several centuries, it illustrates all the styles that succeeded one another in Dalmatia. It serves now as the most imposing monument in the city of Trogir.
It was built on the foundations of an early-Christian cathedral destroyed in the 12th century during the sack of the town by the Saracens in 1123. The building of the cathedral began in 1213 and finished during the 17th century. Like the older one, it is also dedicated to St. Lawrence (Sveti Lovro) but it is better known as St. John's Cathedral (Sveti Ivan) after bishop John, who died in 1111 and stood out for his saintly lifestyle at a time when the Hungarian King Koloman had taken over Dalmatia and Croatia. Most of the work in the construction of the cathedral took place in the 13th century, being mostly completed in 1251. That means the building is mainly in Romanesque style, whilst the vault inside is gothic as it was built during the 15th century, in Mannerist style.
Work on the bell tower began at the end of the 14th century, but it was not completed until the end of the 16th century. The first floor is in Gothic style and it was built by Masters Stejpan and Matej. After it had been demolished by the Venetians in 1420, it was restored by Matija Gojković. The second floor is in low Gothic style and was probably the work of Venetian masters, as it is reminiscent of the windows of the famous Venetian Palazzo Ca d'Oro. The final floor was built by Trifun Bokanić (1575–1609). On top of the bell tower there are four statues, the work of Venetian sculptor Alessandro Vittoria (1525–1608). In the centre of the facade, within a small round opening, there is the carved coat of arms of the most powerful King, Ludvic of Angevin dynasty.
The local architect and sculptor Master Radovan worked on the cathedral's gateway (main west portal) early in its construction. Most of the portal was carved by the master himself, but some other hands are distinguishable, those of his pupils and followers. Finished and signed in 1240, it is a monumental and perhaps unique work of this great Croatian artist, of whom the inscription on the base of the lunette says: "the best of all in this artisanship".