Over the years, Jamnagar has shown excellent development in every aspect, be it economy, commerce, education, infrastructure or social growth. Jamnagar has many ancient temples. Jamnagar is also known as “Brass City” as thousands of small- and large-scale Brass Units operate here. It is one of the biggest hubs for brass products across the country. The world's biggest refinery is located near Jamnagar belonging to Reliance Industries Ltd. The city has base stations of all three wings of Defense viz., Indian Air Force, Indian Navy and Indian Army. Bedi Port is just 7 kms away from the city. Jamnagar is well connected by Rail, Road and Air. M.P. Shah Medical College which is one of the top colleges in India is located in Jamnagar. Gujarat Ayurveda University of Jamnagar is considered to be the best one in the world for Ayurvedic Medicines. The domestic cricket championship, Ranji Trophy, is named after the legendary Jam Ranjitsinhji, who was one the world's greatest cricket player. Other famous cricketers like Shri Vinoo Mankad, Shri Ajay Jadeja, Shri Ravindra Jadeja also belong to Jamnagar.