It’s #MuseumWeek on Twitter and museums all over London are among the more than 2,000 institutions worldwide already tweeting away. Among those, large and small, taking part in London are the @hornimanmuseum, @ExploreWellcome, @JewishMuseumLDN, @BFHouse, @HRP_Palaces, @NMMGreenwich, and @drjohnsonshouse (pictured). Each day of the week they’ll be tweeting on a different theme until Sunday (today’s is #souvenirsMW). For the full stream, head to @MuseumWeek.