The word kamerlengo (Italian: camerlengo) refers to the title of an administrative official (a chamberlain).

Originally, the fortress was separated from the city by an outer crenelated wall and a wet moat.

[2] In the Kamerlengo courtyard, a smaller chapel was built dedicated to St. Mark, the patron saint of the Venetian Republic.

Below the monumental relief of the lion was a smaller one with the coat of arms of the Tron family in a quadrilobe.

The Gothic relief of the lion with the initials DC and the coat of arms of the Contarini family was made after the capture of Trogir in the 15th century and placed on the chapel in memory of Doge Domenico Contarini I (1043-1071), who is mentioned in the Venetian annals in the context of the conquest of Zadar in the mid-12th century.