Freegamepick.com is offering "GREAT SECRETS - DA VINCI" Hidden Object Game for Free.
File Size for Download is 12.6MB.
THE ONLY THING TO WATCH OUT FOR - BE CAREFUL
As with all games from this site, please make sure you uncheck any boxes for toolbars, shortcut or askbar etc.. as they tend to add spyware to your PC. As Whiterabbit has shared in the past, the games are OK to play if these boxes are unchecked.
Enjoy!!