[custom_adv] Semnan is the capital city of Semnan Province. Its population was 153,680 people and 36,298 families as of the 2011 census. Semnan is located 216 kilometers east of Capital in north. It is home to Semnani languages and is known as Seman locally. [custom_adv] The city offer various recreational activities, historical and religious sites, festivals, gardens and parks, colleges and universities, and Semnani culture. [custom_adv] The city serves as the cultural and political capital of the Semnan Province. The city's main souvenirs are daffodil flowers, Shirmal pastry, Kolüçe cookies, kilim rugs, and shortbread. [custom_adv] Mazandaran Province is one of the most densely populated provinces and has diverse natural resources, notably large reservoirs of oil and natural gas. The province's four largest counties are Sari, Amol, Nur, and Tonekabon. It was founded in 1937. [custom_adv] The diverse nature of the province features plains, prairies, forests and rainforest stretching from the sandy beaches of the Caspian Sea to the rugged and snowcapped Alborz sierra, including Mount Damavand, one of the highest peaks and volcanos in Asia. [custom_adv] Mazandaran is a major producer of farmed fish, and aquaculture provides an important economic addition to traditional dominance of agriculture. [custom_adv] Another important contributor to the economy is the tourism industry, as people from all enjoy visiting the area. Mazandaran is also a fast-growing centre for biotechnology.