Entrance to the Garden of Ridvan in Baghdad, where Baha'u'llah declared
His Mission in 1863 and after twelve days departed for Constantinople. ... The
beauty of this garden is apparent through its service to humanity -- that is,
it was a hospital then and two successive governments have used it
similarly ... [as] a center where bodily
ailments are healed.
(The Baha'i World 1926-1928)