Pothohar Plateau in the context of "Thal Desert"

The Islamabad–Rawalpindi metropolitan area, commonly referred to as Islamabad–Rawalpindi or the Twin Cities, is the fourth-largest metropolitan area of Pakistan, after Karachi, Lahore, and Faisalabad. With a population of over 5.7 million, it is the third-most populous metropolitan area in the Punjab region, the largest in northern Punjab, and fourth in the entire country. It consists of the twin cities of Islamabad and Rawalpindi; administratively within the Islamabad Capital Territory and the province of Punjab.

The area includes the Pothohar Plateau in northern Punjab, with and the colonial-era city of Rawalpindi, as well as the modern planned city of Islamabad. The region received a major boom with the construction of Islamabad as the capital city of Pakistan in the 1960s.

Gandhara (IAST: Gandhāra) was an ancient Indo-Aryan civilisation in present-day northwestern Pakistan and eastern Afghanistan. The core of the region of Gandhara was the Peshawar and Swat valleys, extending up to Kabul and Bagram in the west and the Pothohar Plateau in the east. However, the cultural influence of Greater Gandhara extended as far as the Bamyan valley in the west and the Karakoram range in the northeast. The region was a central location for the spread of Buddhism to Central and East Asia, with many Chinese Buddhist pilgrims visiting the region.

Between the third century BCE and third century CE, Gāndhārī, a Middle Indo-Aryan language written in the Kharosthi script and linked with the modern Dardic language family, acted as the lingua franca of the region, and through Buddhism, the language spread as far as China based on Gandhāran Buddhist texts. Famed for its unique Gandharan style of art, the region attained its height from the 1st century to the 5th century CE under the Kushan Empire, which had their twin capitals at Kapiśi and Puruṣapura, ushering the period known as Pax Kushana.

Taxila (Punjabi: ٹيکسلا, romanized: Ṭeksilā), historically known as Takshashila, is a city and UNESCO World Heritage Site on the Pothohar Plateau of Punjab, Pakistan. Founded around c. 1000 BC, it is one of the oldest cities in South Asia. Taxila is located within the Taxila Tehsil of Rawalpindi District in northern Punjab, and it lies approximately 25 kilometres (16 mi) northwest of the Islamabad–Rawalpindi metropolitan area and is just south of the Haripur District of Khyber Pakhtunkhwa.

Established during the Vedic period, Old Taxila was for a time the capital city of ancient Gandhāra. Situated on the eastern shore of the Indus River—the pivotal junction of the Indian subcontinent and Central Asia—it was possibly founded around 1000 BCE. Takshashila and Pushkalavati remained prominent cities in Gandhāra during the Mahajanapadas. The city is believed to have become part of the Achaemenid Empire during 550 – 326 BCE. In 326 BCE, it was claimed by Alexander the Great, after overthrowing the Achaemenids. Alexander gained control of the city without a battle since it immediately surrendered to his Macedonian Empire. This was followed successively by the Mauryans (~317 – ~200 BCE), the Indo-Greeks (~200 BCE – ~55 BCE), the Indo-Scythians (~80 BCE – ~30 CE), and the Kushan Empire (~30 CE – ~375 CE), who destroyed the existing city, in the first century CE, to build their own on a site to the north of the ruins. Owing to its strategic location, Taxila has changed hands many times over the centuries, with many polities vying for its control. When the great ancient trade routes connecting these regions ceased to be important, the city sank into insignificance and was finally destroyed in the 5th century by the invading Hunas. In mid-19th century British India, ancient Taxila's ruins were rediscovered by British archaeologist Alexander Cunningham and extensively excavated by Sir John Marshall. In 1980, UNESCO designated Taxila as a World Heritage Site. The area was part of the ancient Gandhara region. Taxila (ancient city) was designated a UNESCO World Heritage Site in 1980 and is located in the town of Taxila.

Rawalpindi, colloquially known as Pindi, is the third-largest city in the Pakistani province of Punjab, serving as the principal commercial and industrial hub of northern Punjab. It is the fourth-most populous city in Pakistan and ranks as the world's third-largest Punjabi-speaking metropolis (after Lahore and Faisalabad). Located along the Soan River in north-western Punjab, Rawalpindi lies adjacent to Pakistan's capital, Islamabad, and the two are jointly known as the "twin cities".

Located on the Pothohar Plateau of northern Punjab — a region known for its ancient heritage, for instance the city of Taxila, a UNESCO World Heritage Site — Rawalpindi was founded in 1493 and remained a small town of little importance, with local Punjabi Muslim tribes indirectly ruling it for larger empires, up until 1765 when it was captured by the Bhangi Misl. During the Sikh era, Rawalpindi transitioned from a small regional town into one of the major Punjabi cities, becoming a hub of trade and military. The city also became a cosmopolitan hub, housing various ethnic minorities as immigrants and refugees alongside the native Punjabi majority.

The Islamabad Capital Territory is a federal territory of Pakistan, centred around Islamabad, the capital of Pakistan. It is located on the northern edge of the Pothohar Plateau, at the foot of the Margalla Hills, in the northwestern Punjab region. The Territory shares borders with the province of Khyber Pakhtunkhwa in the west and the province of Punjab in the remaining directions. It covers an area of 906.5 square kilometres (350.0 sq mi) and, according to 2023 census, has a population of over 2.3 million.

The area was separated from Rawalpindi District in 1967 to form a separate territory administered by the federal government. The territory is represented in the National Assembly by NA-52, NA-53, and NA-54 constituencies and by four seats in the Senate.

Gandhara (IAST: Gandhāra) was an ancient Indo-Aryan civilization in present-day northwestern Pakistan and eastern Afghanistan. The core of the region of Gandhara was the Peshawar and Swat valleys, extending up to Kabul and Bagram in the west and the Pothohar Plateau in the east. However, the cultural influence of Greater Gandhara extended as far as the Bamyan valley in the west and the Karakoram range in the northeast. The region was a central location for the spread of Buddhism to Central and East Asia, with many Chinese Buddhist pilgrims visiting the region.

Between the third century BCE and third century CE, Gāndhārī, a Middle Indo-Aryan language written in the Kharosthi script and linked with the modern Dardic language family, acted as the lingua franca of the region, and through Buddhism, the language spread as far as China based on Gandhāran Buddhist texts. Famed for its unique Gandharan style of art, the region attained its height from the 1st century to the 5th century CE under the Kushan Empire, which had their twin capitals at Kapiśi and Puruṣapura, ushering the period known as Pax Kushana.

Sindh Sagar Doab (Punjabi: سندھ ساگر دوآب, romanized: Sind Sāgar Dōāb), sometimes shortened as Sagar Doab, is a Doab or tract of land in the Punjab region, lying between the Indus and Jhelum rivers, in present-day Pakistan. The Doab covers a huge portion of the western areas of the Punjab province and eastern Hazara Division. It is one of the five major Doabs of the Punjab and forms the northwestern portion of the region, covering the Hazara Hills, Galyat, Pothohar Plateau and Thal Desert.

The History of Punjab is the history of the Punjab region which is a geopolitical, cultural, and historical region in the northwest of South Asia, comprising the Punjab province in Pakistan and the Punjab state in India. It is believed that the earliest evidence of human habitation in Punjab traces to the Soan valley of the Pothohar, between the Indus and the Jhelum rivers, where Soanian culture developed between 774,000 BC and 11,700 BC. This period goes back to the first interglacial period in the second Ice Age, from which remnants of stone and flint tools have been found.

The Punjab region was the site of one of the earliest cradle of civilizations, the Bronze Age Harrapan civilization that flourished from about 3000 B.C. and declined rapidly 1,000 years later, following the Indo-Aryan migrations that overran the region in waves between 1500 and 500 B.C. The migrating Indo-Aryan tribes gave rise to the Iron Age Vedic civilization, which lasted till 500 BC. During this era, the Rigveda was composed in Punjab, laying the foundation of Hinduism. In the 6th century BC, Pushkarasarin, the monarch of Gandhara, assumed a role in halting the expansionary ambitions of the Achaemenid Empire until during the reign of Darius wherein tribute rendered by Gandhara to him is first documented. A century later, the Janapadas of Punjab encountered the expansive undertakings of Alexander. The Janapadas exhibited resistance to his advances, notably the Aśvaka of Gandhara, the Mallians of South Punjab, and Porus of Central Punjab. Following the demise of Alexander, Chandragupta Maurya, who had received his education in the city of Taxila, garnered support from republics such as Trigarta and Gandhara. He subsequently conquered the Nanda Empire, with Taxila being designated as the provincial capital of the Northwestern territories. After its decline, the Indo-Greeks, Indo-Sakas and Indo-Parthians successively established reigns in Punjab however other states maintained autonomy and other janapadas such as that of the Yaudheya and the Audumbaras in Eastern Punjab resisted their expansions. In the late 1st century AD the Kushan Empire annexed Punjab, Gandharas cultural zenith occurred during this period in which artwork from the region flourished.