Kashan (Kâšân kɒːˈʃɒːn); Qashan; Cassan; also romanized as Kāshān) is a city in the Central District of Kashan County, in the northern part of Isfahan province, Iran, and serves as both capital of the county and of the district.
At the 2006 National Census, its population was 248,789 in 67,464 households. The following census in 2011 counted 275,325 people in 80,015 households. The latest census in 2016 showed a population of 304,487 people in 91,935 households.
Some etymologists argue that the city name comes from the Kasian, the original inhabitants of the city, whose remains are found at Tapeh Sialk dating back 9,000 years; later this was changed to "Kashian", hence the town name. Between the 12th and the 14th centuries Kashan was an important centre for the production of high quality pottery and tiles. In modern Persian, the word for a tile (kashi) comes from the name of the town.
Kashan is divided into two parts, mountainous and desert. In the west side, Kashan is cited in the neighbourhood of two of highest peaks of Karkas chain, Mount Gargash to the southwest of Kashan (the home of Iran national observatory, the largest astronomical telescope of Iran) and Mount Ardehaal in the west of Kashan, also known as "Damavand of Kashan" and the highest peak of Ardehaal mountains (end part of Karkas chain in central Iran).
On August 9, 2007, Iran placed the Historical Axis of Fin, Sialk, Kashan on its Tentative List for possible future nomination as a UNESCO World Heritage Site. The exact definition of what locations within Kashan proper might be nominated was not made clear. In 2012 Iran successfully nominated the Fin Garden separately for inscription by UNESCO as a part of its Persian Gardens World Heritage Site. Despite this the "Historical-Cultural Axis of Fin, Sialk, Kashan" remains in full on Iran's Tentative List.
The Boroujerdiha house is one of the famous historical places from the Qajar period. This house is well known with unique architecture, which has a specific beauty. The house has two internal and external patios.