What happens during the hajj to mecca?

Thousands of people comes in the city of Mecca. Hotels and motels gets occupied. more security. Increase in the business of restaurants, hotels, clothes,jewelery I mean the whole city gets overloaded and busy...But The city loosk like a twinkling star with thousands of muslims from all around the world. all worshiping Allah, praying... it just looks beautiful, Masha'Allah~!