The city of Sighnaghi is a major tourist centre in Kakheti. It's a picturesque city located about 100km east of Tbilisi on a hill overlooking the Alazani valley. Sighnaghi was founded in the 18th century by king Heraclius II of Georgia and is surrounded by a 4km long wall. It is possible to walk on the wall and climb onto the towers from which there are good views of the city and the valley below. Sighnaghi has many hotels and restaurants.