The architecture of the areas now constituting Pakistan can be designated to four distinct periods as pre-Islamic, Islamic, colonial and post-colonial. With the beginning of the Indus civilization around the middle of the 3rd millennium B.C., an advanced urban culture developed for the first time in the region, with large structural facilities, some of which survive to this day.Mohenjo Daro, Harappa and Kot Diji belong to the pre-Islamic era settlements. The rise of Buddhism and the Persian and Greek influence led to the development of the Greco-Buddhist style, starting from the 1st century CE. The high point of this era was reached with the culmination of the Gandhara style. An example of Buddhist architecture is the ruins of the Buddhist monastery Takht-i-Bahi in the northwest province. The arrival of Islam in today’s Pakistan meant a sudden end of Buddhist architecture. However, a smooth transition to predominantly pictureless Islamic architecture occurred. The most important of the few completely discovered buildings of Persian style is the tomb of the Shah Rukn-i-Alam in Multan. During the Mughal era design elements of Islamic-Persian architecture were fused with and often produced playful forms of the Hindustani art.
Lahore, occasional residence of Mughal rulers, exhibits a multiplicity of important buildings from the empire, among them the Badshahi mosque, the fortress of Lahore with the famous Alamgiri Gate, the colourful, still strongly Persian seeming Wazir Khan Mosque as well as numerous other mosques and mausoleums. Also the Shahjahan Mosque of Thatta in Sindh originates from the epoch of the Mughals. In the British colonial age predominantly representative buildings of the Indo-European style developed, from a mixture of European and Indian-Islamic components. Post-colonial national identity is expressed in modern structures like the Faisal Mosque, the Minar-e-Pakistan and the Mazar-e-Quaid.