Hajj is the fifth pillar of the religion Islam. It is obligatory on the Muslims.
Hajj
There is no 'a Hajj.' Hajj is the pilgrimage where all Muslims are required to go for Pilgrimage. This is a spiritual and only religion- based journey.
Islam
Muslims practice their religion everyday of their lives. How they practice their religion is the question. They practice their religion with The Five Pillars. Those Five Pillars include The Statement of Faith (Shahadah: There is no God, and Muhammad is the Messenger of Allah), Praying (Salat), Fasting (Roza), Charity (Zakat), and lastly Pilgrimage to Hajj (Hajj).
Its a worship of Allah (god)
Hajj is that activity in Islam, which seals and combines all the rest of the pillars and practices of the religion. It is Fard on every Muslim to perform the Pilgrimage of kaaba i.e. The Hajj ateast once in a life time for everyone who can afford to do so.
mecca is the central place of there religion
For women, yes, it is compulsory. For men, it is not an obligation or requirement per religion.
A religious journey is known as a 'pilgrimage', also in the Moslem religion a Hajj.
Hajj is an Arabic word. It is the holy journaey for Muslims. You may call it "pilgramage" but it is a generic term, as any one who is on a holy journey no matter from wihcih religion, they all are call pilgrims and journaey is called pilgramage. So while talking about holy journey for Muslims, its always called Hajj. html you can read more about it here, shorthajj [dot] com
Hajj is like a mini Day of Judgment. It teaches you to be ready for the day of Judgment. It also teaches unity, equality and striving to do good deeds. Hajj is a spiritual journey and hence it touches the very core of the human soul. Spending the night in the mountains of Mina and Arafat and performing all the Hajj rituals serves are a great way to revitalize the Muslim faith and Taqwa.