Ark citadel

 The Ark of Bukhara is a massive fortress located in the city of Bukhara, Uzbekistan, that was initially built and occupied around the 5th century AD. In addition to being a military structure, the Ark encompassed what was essentially a town that, during much of the fortress's history, was inhabited by the various royal courts that held sway over the region surrounding Bukhara. The Ark was used as a fortress until it fell to Russia in 1920. Currently, the Ark is a tourist attraction and houses museums covering its history.[1] The museums and other restored areas include an archaeological museum, the throne room, the reception and coronation court, a local history museum, and the court mosque.

The Ark is a large earthen fortification located in the northwestern part of contemporary Bukhara. In layout, it resembles a modified rectangle, a little elongated from the west to the east. The perimeter of the external walls is 789.6 m (2,591 ft), the area enclosed being 3.96 ha (9.8 acres). The height of the walls varies from 16 to 20 m (52 to 66 ft).

The ceremonial entrance into the citadel is architecturally framed by two 18th-century towers. The upper parts of the towers are connected by a gallery, rooms, and terraces. A gradually rising ramp leads through a winch-raised portal and a covered long corridor to the mosque of Dzhuma. The covered corridor offers access to storerooms and prison cells. In the center of the Ark is located a large complex of buildings, one of the best-preserved being the mosque of Ul'dukhtaron, which is connected to legends of forty girls tortured and cast into a well