Santa Maria della Salute is a Baroque basilica on the Grand Canal in Venice, free to enter, and built in 1630 as a vow to the Virgin Mary during a plague. Its massive white dome anchors the entrance to the canal. The Venetian Senate commissioned the church after the plague killed roughly a third of the city's population. Architect Baldassare Longhena, only 26 at the time, won the design competition with a bold octagonal plan topped by a double dome. The larger dome was conceived as a representation of the Crown of the Rosary, while a statue of the Virgin stands at its summit holding a baton of "Capitana da mar" (Captain of the Sea). Construction took over 50 years, and Longhena died a year before its completion in 1687. The interior houses works by Titian and Tintoretto in the sacristy, which requires a separate ticket. The basilica's main rotunda is free to enter and offers a striking sense of space defined by the octagonal geometry. Every November 21, Venetians celebrate the Festa della Salute by crossing a temporary pontoon bridge from San Marco to the church, a tradition unbroken since 1631. The sacristy also features a panoramic terrace opened after recent restoration work, giving visitors rooftop views over Dorsoduro and the lagoon.