Barracks, Akka prison

And among His signs is the sublimity of His grandeur, His exalted state, His towering glory, and the shining out of His beauty above the horizon of the Prison: so that heads were bowed before Him and voices lowered, and humble were the faces that turned His way. This is a proof never witnessed in the ages gone before.

'Abdu'l-Bahá, Selections from the Writings of  'Abdu'l-Bahá