Yes, unmarried Muslims are allowed to perform Hajj if they are adult, healthy (in mind and body), have enough money to cover Hajj expenses, and can travel peacefully and securely.
Please see the Related Links concerning the Shiite Hajj.
The Muslims from all over the world come to Mecca to perform Hajj.
The Muslims perform Hajj. It is obligatory on them once in lifetime.
The Muslims perform Hajj because it is obligatory on each Muslim man and woman to perform Hajj once in lifetime provided he/she can afford.
No, the Muslims are not required to perform Hajj annually. It is obligatory once in life under certain conditions. Anyhow, if a Muslim can perform Hajj every year, it is not prohibited.
Muslims perform Hajj in the Holy city Makkah and Madina in Saudi Arabia.
Up to 4 million Muslims can perform Hajj and can be afforded in Al-Masjid Al-Haram that is surrounding Kaaba.
Those who can afford it physically, financially, and safely.
In order to enter Mecca, one must be a Muslim and perform the pilgrimage known as Hajj. Non-Muslims are not allowed to enter the city.
The Muslims go to Makka, Saudi Arabia, to perform pilgrimage - Hajj.
All the Muslims gone to Makka Mukarma to perform Hajj perform the same ritual together, not in turns or groupwise.