From: Baha'i Glossary
Also called Akko and Acre: The prison city in Palestine
where Baha’u’llah was finally exiled. He arrived there on August 31, 1868. A
four-thousand-year-old seaport located on the northern coast of what is now
Israel. It is surrounded by fortress-like walls facing the sea. In the
mid-1800s it was a penal colony to which the worst criminals of the Ottoman
Empire were sent. In 1868 Baha’u’llah and His family and companions were
banished to Acre by Sultan ‘Abdu'l-‘Aziz. Because of the privations suffered
within its walls Baha’u’llah named Acre "the Most Great Prison."