The Kitáb-i-Aqdas - The Most Holy Book
Index term: Aqsá, under Mosque(s)
n116.
O Emperor of Austria! He Who is the Dayspring of God's Light dwelt in the prison of 'Akká at the time when thou didst set forth to visit the Aqsá Mosque.
Francis Joseph (Franz Josef, 1830-1916), Emperor of Austria and King of Hungary, made a pilgrimage to Jerusalem in 1869. While in the Holy Land he failed to take the opportunity to inquire about Bahá'u'lláh Who at that time was a prisoner in 'Akká (Acre).
The Aqsá Mosque, literally, the "Most Distant" Mosque, is referred to in the Qur'án, and has become identified with the Temple Mount in Jerusalem.
q94.
 
Question: Concerning mosques, chapels and temples.
Answer: Whatever hath been constructed for the worship of the one true God, such as mosques, chapels and temples, must not be used for any purpose other than the commemoration of His Name. This is an ordinance of God, and he who violateth it is verily of those who have transgressed. No harm attacheth to the builder, for he hath performed his deed for the sake of God, and hath received and will continue to receive his just reward.