It is called a Mosque
The Islamic religion has three holy cities: Mecca, Medina and Jerusalem.
Mecca
Islamic is an adjective that means related to Islam religion or related to Muslims as followers of Islam religion. For example Islamic holy book means the holy book for muslims.
Hajj
Mecca is the Holy Land not the city
Mecca, Medina, and Jerusalem mainly.
Kaab in Makkah (Mecca) in the Kingdom of Saudi Arabia.
Almost all major religions have holy books and holy languages.
Muslims, followers of the religion-Islam, follow the guidance given in the Holy Book Qoran
You can use Islamic religion to guide you to the rightful path. Koran is the Holy book which is for the whole human race so that they can be guided and achieve salvation and entry to Heaven
I don't know what you mean but each Prophet has a book that came down upon them. That made the religions. For example; In the Islamic religion, the holy book is the Quran. In the Christian religion, their holy book is the Bible, while in the Jewish religion, their holy book is the Torah.
The Quran, Muslims holy book, was revealed in Arabic by God to prophet Muhammad (PBUH).