Lahore is the second largest city of Pakistan after Karachi and serves as the capital city of Punjab province. According to 2010 estimation its population is about 10 million. Lahore is an old and historic city, enriched with ancient architecture. Lahore is the center of education, economic, sports and cultural activities. Every year thousand of people visit Lahore for business purposes or to see historical places. Mughal structures such as the Badshahi Mosque, the Lahore Fort, Shalimar Gardens, and the mausolea of Jehangir and Nur Jehan, Chauburji Gate, walled city are some of the major tourist attractions in the city. Lahore is also home to many British colonial structures built in the Indo-Saracenic style, such as the Lahore High Court, the General Post Office, Lahore Museum, Lahore Railway Station, and many older universities and colleges including the University of the Punjab, Govt College and King Edward Medical college. The Lahore Zoo (1872), Which is the fourth oldest in the world and 2ng largest in South Asia. is also situated here. Lahore is known is the city of gardens. It has many beautiful parks and gardens including Shalimar Gardens, Lawrence Gardens, Hazuri Bagh, Iqbal Park, Mochi Bagh, Gulshan Iqbal Park, Model Town Park, Race Course Park, Nasir Bagh Lahore, Jallo Park, Wild Life Park, and Bagh-e-Jinnah. Lahore is also famous for its delicious foods. To facilitate and attract of tourists, food streets have been established at Gawalmandi, Anarkali, and Fort Road. Wagah border is also an important and actrictive place for the tourists. The flag downing ceremony at Wagha border is very entertaining to visitors.