More than 20,000 people have flocked to an Iranian museum showcasing renowned Western artists' works, some for the first time -- part of a treasure trove amassed before the Islamic Revolution. The museum's collection is reputed to be the greatest line-up of modern masterpieces outside Europe and the United States, and includes multi-million-dollar pieces, much of which has been kept under wraps since the 1979 revolution. The Tehran Museum of ...