Great Aceh Regency () is a regency of the Indonesian province of Aceh. The regency covers an area of 2,903.49 square kilometres and had a population of 351,418 at the 2010 Census and 405,535 at the 2020 Census; the official estimate as at mid 2021 was 409,527. The Regency is located at the northwest tip of Sumatra island and surrounds the provincial capital of Banda Aceh. It includes a number of islands off the northern tip of Sumatra, which comprise Pulo Aceh District within the regency. The seat of the Regency government is the town of Jantho. Economy Aceh Besar Regency produces cloves, nutmeg and palm oil and rice, and also small quantities of maize, cassava, sweet potatoes and beans. Landmarks Museums Aceh Besar Regency contains several museums. The Museum dan Rumoh Aceh is the State Museum, located in Banda Aceh. The museum's main building is built in the style of a traditional Acehnese house. It was installed by Dutch Governor Van Swart in 1915. Museum Ali Hasymi contains the personal collection of Ali Hasymi, a former governor of Aceh and artist and include books by the scholars of Acehnese past, ancient ceramics, the typical weapons of Aceh, souvenirs from all over the world, etc. Museum Cut Nyak Dhien was originally the home of the heroine Cut Nyak Dhien. The ancient Abee Tanoh Library, located at the foot of Mount Seulawa contains some important manuscripts. Places of worship Indra Puri Old Mosque is located about 20 km south of Medan. Indra Puri was a Hindu kingdom and it was a place of worship before Islam arrived. Later, Sultan Iskandar Muda introduced Islam to the public. After the people embraced Islam, the previous temple was converted into a mosque. The mosque site covers an area of 33,875 m2, and is located approximately 150 metres from the edge of the Krueng Aceh River. Fortress and tombs Indra Patra Fortress is situated 19 km from Banda Aceh at Krueng Raya. According to history it was built under the Indra Puri Hindu kingdom, although some say that the fort was built during the Sultanate of Aceh Darussalam in an effort to resist the Portuguese. The fort had a very important function at the time of Sultan Iskandar Muda. The Tomb of Admiral Malahayati is located about 32 km from the city of Banda Aceh. Administrative divisions The regency is divided administratively into twenty-three districts