Achilleion () is a palace built in Gastouri (Γαστούρι) on the Island of Corfu for the Empress () Elisabeth of Austria, also known as Sisi, after a suggestion by the Austrian consul Alexander von Warsberg. Elisabeth was deeply saddened by the tragic loss of her only son, Crown Prince Rudolf of Austria following the Mayerling incident in 1889, and a year later she had this summer palace built as a refuge.