Kashin was first mentioned in a chronicle under the year of 1238, when it was sacked during the Mongol invasion. It was given by Grand Duke Mikhail Yaroslavich as an appanage to his son Vasily, who founded a short-lived dynasty of local princes. Mikhail Yaroslavich's wife Anna took the veil in Kashin's nunnery, died there on October 2, 1368, and was glorified by the Russian Orthodox Church in 1650 as a holy patroness of all women who suffer the loss of relatives. Her relics are preserved in the Ascension Cathedral of Kashin. In 1382, Kashin was annexed by Principality of Tver. From 1399 to 1426, it was held by a second dynasty of Kashin princes, who claimed their seniority in the House of Tver. In 1452, Kashin withstood a siege by Dmitry Shemyaka. It finally passed to the Grand Duchy of Moscow in 1486 with the rest of the Principality of Tver. In 1708, the town became a part of Ingermanland Governorate, but in 1727 it was transferred to Moscow Governorate. In 1775, Tver Viceroyalty was formed from the lands which previously belonged to Moscow and Novgorod Governorates, and Kashinsky Uyezd with the seat in Kashin was established. In 1796, Tver Viceroyalty was transformed into Tver Governorate. On October 3, 1927, Kashinsky Uyezd was abolished and split between Bezhetsky and Kimrsky Uyezds. On July 12, 1929, Kashinsky District, with the administrative center in the Kashin, was established within Bezhetsk Okrug of Moscow Oblast. On July 23, 1930, the okrugs were abolished and the districts were directly subordinated to the oblast. On January 29, 1935, Kalinin Oblast was established and Kashin was transferred to it. In 1990, Kalinin Oblast was renamed Tver Oblast.
The mean temperature in Kashin is in January and in July.
Economy
The town is an important part of the oblast's economy. It is home to Veresk, one of the largest alcoholic drink producing companies in the region. Another major business is the mineral water company ERA, which produces the Kashinskaya brand of mineral water. There are also an electric equipment company, a wool factory, and a milk and meat-processing company. Several times a week, a market is organized in the main square of the town where residents can sell various items. Also, fruit and vegetables from nearby rural farms are sold.
Transportation
Buses provide public transportation within the town and commute to nearby destinations. Also, a train passes through Kashin twice a day. The morning train travels from Sonkovo to Savyolovo, while the afternoon train travels in the opposite direction. Several times a week, a train from St. Petersburg stops in Kashin.
Architecture
There are several architectural monuments in Kashin, including monasteries, churches, and cathedrals. The most ancient of these, a wooden chapel from 1646, was burned to the ground in 1998. The town contains thirty-six cultural heritage monuments of federal significance, including the ensemble of the Presentation Monastery and a number of churches built in the 18th and the 19th centuries.
There is a resort area near Kashin where many oblast residents spend their vacation near the Kashinka River. Kashin itself is known as a balneological resort. On holidays and special dates, the town hosts large festivals which involve dancing, food, and various performances.