I The Indus perhaps gave the name to our religion and nation. The Indus is, by volume, the largest exotic river (one that mainly flows through a country from which it receives no water) in the world. Paleolithic sites have been discovered in Pothohar, with the stone tools of the Soan Culture. In ancient Gandhara, evidence of cave dwellers dated 15,000 years ago has been discovered at Mardan. The major cities of the Indus Valley Civilization (IVC), such as Harappa and Mohenjo Daro, date back to around 3300 BC, and represent some of the largest human habitations of the ancient world were on its banks
J Jantar mantar in Jaipur built by Jaisingh The Jantar Mantar is the name given to observatories built by Maharaja Sawai Jai Singh II of Jaipur. While it exists in four cities in all (Delhi, Jaipur, Ujjain, Varanasi), the sundials at Jaipur are considered to be the most exquisite and mysterious. one of the instruments is an equinoctial dial, consisting a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis. On either side of the gnomon is a quadrant of a circle, parallel to the plane of the equator. The instrument is intended to measure the time of day, correct to half a second, and declination of the Sun and the other heavenly bodies. Maharaja Jai Singh II of Jaipur constructed two of these massive solar dials: Jantar Mantar, Jaipur