Palazzo Grassi

The building stands on a trapezoidal plot that runs from the banks of the Grand Canal back toward Campo San Samuele. The plan organizes space around a central colonnaded courtyard that divides the palazzo into a front block fronting the canal, which contains four lateral halls and a principal salon, and a rear block of smaller rooms anchored by a large stair. The courtyard was covered with a glass roof in the twentieth century and later strengthened; the glazed canopy now includes a protective awning.

The main façade faces the Grand Canal and is dressed in pale Istrian stone, arranged in a classical three-part composition. At water level a three-opening water entrance presents the formal access from the canal and has been compared in appearance to a triumphal arch. The principal storeys display large multi-arched window openings, with the lower noble floor using round arches and the upper noble floor showing alternating curved and triangular pediments above the windows. Flat pilasters placed between the openings rise to capitals in the Ionic and Corinthian orders and a projecting cornice with brackets conceals an attic storey.

The lateral façade toward Campo San Samuele follows the same classical language. A ground-level portal recalls Roman models and a Palladian window, a central arched opening flanked by two rectangular openings, marks a principal axis. Paired single-light windows and small balconies are arranged with regular spacing along this face.

The grand staircase occupies the central circulation spine and carries important painted decoration. The walls and vaults of the stairwell bear frescoes by Michelangelo Morlaiter and Francesco Zanchi, while ceiling work elsewhere in the building includes paintings by Giambattista Canal and by Christian Griepenkerl, with Fabio Canal also linked to the staircase decoration. In the early twentieth century Giambattista Canal’s ballroom panels were removed and installed on the main stair, where they remain integrated into the vertical sequence.

Interior finishes combine original eighteenth-century materials and later interventions. Many rooms retain inlaid marble pavements and stucco work, some of which were selectively restored during recent conservation. Stair surfaces display a fine lime-based plaster known as marmorino applied in later works. In contemporary interventions thin grey linoleum has been laid over some of the ancient marble floors. The vestibule was modified in the nineteenth century when four columns were added and the ballroom was subdivided to create an anteroom decorated by Christian Griepenkerl.

Technical upgrades have been introduced to support museum use while reducing physical impact on the historic fabric. Elevators and modern mechanical systems were installed in the early twentieth century. Mid- and late-twentieth-century restorations created hidden technical cavities and a new climate-control plant that uses condensers drawing water from the lagoon. Recent lighting and security fittings are mounted on hollow steel beams that also carry surveillance cameras, presence detectors, and emergency lamps; the lighting system includes about 1,800 orientable dimmable spotlights, arranged to illuminate rooms without touching delicate ceilings. Today the palace offers forty exhibition rooms, providing roughly 5,000 square metres of display area within its conserved and adapted historic structure.