Twin cities are a special case of two neighboring cities or urban centres that grow into a single conurbation – or narrowly separated urban areas – over time. There are no formal criteria, but twin cities are generally comparable in status and size, though not necessarily equal; a city and a substantially smaller suburb would not typically qualify, even if they were once separate. Tri-cities and quad cities are similar phenomena involving three or four municipalities.
High-rise buildings in Minneapolis's Cedar-Riverside neighborhood, with the Downtown Saint Paul skyline visible in the background. Minneapolis' city limits border those of Saint Paul, the capital of Minnesota. From Downtown Minneapolis to Downtown Saint Paul is only 10 miles in length. This gave birth to the nickname of the region, the "Twin Cities" metropolitan area.
A view of the town of Tornio (Finland), which forms a twin city with Haparanda (Sweden)
Cross-border example of twin cities: Plaza Internacional of the Frontera de la Paz. On the left, Santana do Livramento (Brazil); on the right, Rivera (Uruguay).
Rawalpindi is a city in the Punjab province of Pakistan. It is the fourth most populous city in Pakistan and third most populous in Punjab according to 2017 Census. It is located near the Soan River. Rawalpindi is situated close to Pakistan's capital Islamabad, and the two are jointly known as the "twin cities" because of the social and economic links between them.
From top, left to right: Rawal Lake, Gulshan Dadan Khan Mosque, Bahria Town, Rawat Fort, Christ Church, Rawalpindi Railway Station
Emblem
Possible Kushano-Sasanian plate, excavated in Rawalpindi, fourth century CE. British Museum 124093.
The "Fasting Buddha", on display at the British Museum in London, was discovered in Rawalpindi.