Located on İstiklal Caddesi, the Hüseyinağa Mosque was built by its namesake, one of the ağas of Galatasaray, in 1596. An octagonal plaque above the entrance door to its courtyard is decorated with the seal of Mahmud II.
After falling into ruin after a fire, it was repaired by a number of foundations and reopened to worshipers in 1934. Its mihrab, walls and minaret have all been preserved. There is also a fountain in the courtyard, brought from the Sinan Paşa Mosque in Okmeydanı which bears the signature of the architect Sinan. With a capacity of 3,000, the mosque is also the site of the graves of Hüseyin Ağa and Davut Ağa, another of the Galatasaray Ağas.
Mosque is a place of worship for Muslims. It comes from the Arabic word 'masjid' which literally means "a place for prostration". Mosques are also places where Muslims come together for different purposes such as education, social gatherings, public meetings, exhibitions, lectures etc. Although there is no specific requirement for mosques in terms of their architecture, one can see some common features inside and outside of many mosques such as minarets, domes, ablution areas, prayer niche (mihrab), pulpit (minbar) and so on.
Muslims are obliged to perform the ritual worship 5 times a day. They are not required to attend a mosque for each of these prayers however in order to interact with the community they are encouraged to pray in congregation. Friday noon is the only time in a week when Muslims must definitely join the congregational prayer in a mosque after which they can continue their work, education or other commitments.
Azan or the call for prayer is a vocal announcement that one can hear from minarets 5 times a day. The call to prayer is made live -even early in the morning- by a person called 'muazzin'. The muazzins are usually chosen from people with loud and beautiful voices and trained over years to make this announcement beautifully and invite people to worship.