Connected to the palace by an elegant double-order loggia, a chapel dedicated to St. Anne was built in 1643 by the Strassoldo counts, who owned the palace at the time, and from the mid-18th century it also began to fulfil the function of a burial shrine.
The south-facing façade is embellished with two pilasters supporting a tympanum with an oval oculus in the centre and a small, elegant bell gable.
Originally, the main entrance faced north, and the current layout is believed to be due to the construction of the chancellery hall (in fact an extension of the chapel) that now houses the offices of the Palazzo Coronini Cronberg Foundation.
The interior has a single nave overlooked by the matroneum directly accessible from the main floor of the palace via the loggia. A series of tombstones on the walls commemorate the people buried inside the chapel: the first, dated 1748, bears the name of Giuseppe Antonio Strassoldo, the last that of Count Guglielmo Coronini, buried in September 1990, respecting a privilege of which he was the last beneficiary.
Above the 17th-century marble altar, within a carved frame with putti and plant elements, is the altarpiece depicting St. Anne teaching Mary to read, while the large oil-on-canvas lunette depicting the Saints of Paradise is the work of Johann Michael Lichtenreiter (1705-1780). Whereas, on the right wall is the Visitation by Francesco Caucig recovered in 2021.
