Palazzo Grimani Marcello, Renaissance palace on Grand Canal in San Polo, Italy

Palazzo Grimani Marcello is a Renaissance palace on the Grand Canal in the San Polo sestiere, between Ca' Cappello and Palazzo Querini Dubois. Its tripartite facade is clad entirely in Istrian stone, with lesene pilasters ending in Corinthian capitals. The ground floor has a wide arched water portal and four openings with triangular pediments; the first piano nobile has a three-light window with a continuous balcony, and the second repeats it with columns resting directly on the balcony. An eagle relief with spread wings sits on the corner capital of the ground floor.

The palace was built in the 18th century on foundations dating to the 12th century. The Grimani family came to own it through Francesca Giustinian's marriage, connecting it to one of Venice's most powerful family lines.

The palace is also called Grimani dall'albero d'oro, after the golden tree emblem of the Grimani family. Since 2021 the Fondazione dell'Albero d'Oro has opened its halls to the public for visits to the art collection and temporary exhibitions. Carlo Bevilacqua frescoed some of the interior rooms in 1825.

Visitors can reach the palace by vaporetto Line 1 from Piazzale Roma, with the nearest stop at San Toma. It is advisable to check ahead whether exhibitions are taking place, as the building's access varies seasonally.

The secondary facade on the rio delle Erbe is plain, but its water door is split into three openings by columns. The palace also carries the name Grimani dall'albero d'oro, from the golden tree of the Grimani crest, and some of its reliefs, including the winged eagle on the ground-floor corner capital, may once have been gilded.