article_snippet: Missing: Boston's Isabella Stewart Gardner museum continues to display empty frames in the spots where the paintings should be .
article_snippet: The museum, meanwhile, has been displaying empty frames in place of the missing masterworks ever since the theft.
article_snippet: The museum is now offering virtual tours and lectures about the work, in an effort to make up for their continued absence - though The museum's directors continue to hold out hope the museum's directors will one day return.
highlights_snippet: Boston's Stewart Isabella Gardner Museum continues to display empty frames, and is offering $5million reward for the return of works .