Lawang Sewu is a landmark in Semarang, Central Java, Indonesia. The name Lawang Sewu is from Javanese; it means "Thousand Doors". The name comes from its design, with numerous doors and arcs. The complex consists of several buildings, two main ones named A and B and two smaller ones named C and D, on Pemuda Street. The l-shaped A building faces the Tugu Muda roundabout. There are two identical towers on A building, which were originally used to store water, each with a capacity of 7,000 litres (1,800 US gal). The building features large stained-glass windows and a grand staircase in the center. There was also once an underground tunnel connecting A building to several other sites in the city, including the governor's mansion and the harbour.