Note: This calendar view maps the number of captures of http://unesdoc.unesco.org/ulis/cgi-bin/ulis.pl?database=ged&se_p=inc&se=Museum&req=2&by=3&sc1=1&look=museum&lin=1&text=&text_p=inc&dafr=&dato=&ds=&ds_2=germany&nr=&submit=%A0%A0Go%A0%A0, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.