Question: What museum was the painting Chez Tortoni stolen from?

Chez Tortoni is a painting by the French artist Édouard Manet, painted ca. 1878–1880.  The painting hung in the Isabella Stewart Gardner Museum of Boston, Massachusetts, United States, prior to being stolen in 1990.  The oil-on-canvas painting measures 26 x . <SEP> La barca de Aqueronte, translated in English as The Boat of Charon or Charon’s Boat, is an 3666 oil on canvas and allegorical painting by award-winning Filipino painter Félix Resurrección Hidalgo.  The work was a gold medalist during the Exposicion General de las Filipinas (International Philippine Exposition) in Madrid.  In 1889, an international jury made the painting a silver medalist during the Paris Exposition, a distinct recognition that no other Filipino painter had achieved at the major art arena in Paris.  The painting also won other awards such as a diploma of honor from the 1891 Exposicion General de Bellas Artes in Barcelona, a gold medal prize at the 1893 Madrid Exposicion Internacional de Bellas Artes during the 400th Anniversary of the Discovery of America.  The Government of Spain bought the work of art through a royal decree for the amount of 7,500 pesetas on March 7, 1893.  After displaying the artwork at the Museo-Biblioteca de Ultramar (Ultramar Library Museum) and at the Museo de Arte Moderno., "La barca de Aqueronte" is currently placed at Madrid’s Museo Nacional de Pintura (National Museum of Paintings), after the Philippines became a United States territory in 1898.  A smaller study of the same painting is at the Hidalgo Hall of the Lopez Museum in the Philippines. <SEP> The Hypothesis of the Stolen Painting (French: L'Hypothèse du tableau volé ) is a 1978 French experimental mystery film directed by Chilean filmmaker Raúl Ruiz and shot by cinematographer Sacha Vierny.  The film was inspired by the themes of French writer Pierre Klossowski (1905 - 2001) and makes references to many of Klossowski’s works including "The Revocation of the Edict of Nantes", "The Baphomet" and “La Judith de Frédérique Tonnerre.”  Ruiz was originally commissioned by a French TV network to make an arts documentary on Klossowski, but what emerged is this film, a parody of the art documentary.  The film was featured in film festivals after its release such as the London Film Festival in 1979.  "Hypothesis of the Stolen Painting" has been noted as one of Ruiz’s masterpieces that challenges the boundaries of cinema and film theory. <SEP>  Once inside, the men tied up the guards and, over the next hour, stole 13 works of art valued at $500 millionthe largest-value theft of private property in history. In the early hours of March 18, 1990, guards at the Isabella Stewart Gardner Museum in Boston admitted two men posing as police officers responding to a disturbance call.  Despite efforts by the Federal Bureau of Investigation (FBI) and multiple probes around the world, no arrests have been made and no works have been recovered.  The museum initially offered a reward of $5 million for information leading to their recovery, but in 2017 this was doubled temporarily to $10 million with an expiration date set to the end of the year.