Above the Kaiservilla in the hilly park surrounding the summer residence of Emperor Franz Joseph of Austria and his wife Elisabeth, lies a little palace by the name of Marmorschlössl. It was the hideaway of the Empress, better known as Sisi, when in Bad Ischl. (And there's no better after-Christmas treat considering my annual Christmas obsession with the Sissi movies.) While Schlössl is the minimisation of Schloss, Marmor (marble) comes from the material used called Untersberger Marmor, though it was actually a form of limestone.
Good to know:
The photo museum inside the Marmorschlössl is open from Mai to September between 9.30am and 5pm as well as in April and October from 10am to 4pm. Admission per adult is 2 euros though you also have to pay 4,60 euros to get into the Kaiserpark as well. For more information, have a look here.