The exhibitions in the arena were perhaps at their zenith during his tenure of power.
Of the periodical art exhibitions that of the Royal Academy is most noteworthy.
The elector Richard von Greiffenklau (1467-1531) successfully opposed the Reformation, and inaugurated the exhibitions of the holy coat, which called forth the denunciations of Luther, but have continued since his day to bring wealth and celebrity to the city.
He first exhibited at the Academy in 1853, and was a constant contributor to its exhibitions till his death.
Ibn Tumart, who had been driven from several other towns for exhibitions of reforming zeal, now took refuge among his own people, the Masmuda, in the Atlas.