Ramsar is a city in and the capital of Ramsar County, Mazandaran Province, Iran. At the 2006 census, its population was 31,659, in 9,421 families.
Ramsar lies on the coast of the Caspian Sea. It was also known as Sakhtsar in the past. Natives of Ramsar speak the Gilaki language which is a member of Northwest-Iranian languages. The town is known for having some of the highest levels of natural background radiation on Earth.
Ramsar is the westernmost county and city in Mazandaran. It borders the Caspian Sea to the north, Gilan province to the west, Qazvin Province to the south, and Tonekabon to the east.
Ramsar is a popular sea resort for Iranian tourists. The town also offers hot springs, the green forests of the Alborz Mountains, thevacation palace of the last Shah, and the Hotel Ramsar. Twenty-seven kilometres south of Ramsar and 2700 meters above sea level in the Alborz mountains is Javaher Deh village, which is an important tourist attraction in Ramsar County.