What problem did Palladio solve in the façade of San Giorgio Maggiore?

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Palladio solved the problem of reconciling a high nave with lower side aisles in the façade of San Giorgio Maggiore by using a series of engaged columns of increasing height that create an upward perspective towards the central dome. He also placed shorter columns on the sides to visually reduce the height of the aisles. The fact that the church is on an island, relating the building to its environment, is also a consideration but not the main problem solved by Palladio in the façade design. The combination of a dome with a Greek portico is also present in the design, but it is not a problem per se, rather a conscious choice of style.

What Problem Did Palladio Solve in the Façade of San