From the Wikipedia apge 
Vilnius (Lithuanian pronunciation: [ˈvʲɪlʲnʲʊs] (About this sound listen), see also other names) is the capital of Lithuania and its largest city, with a population of 542,664 as of 2015. Vilnius is located in the southeast part of Lithuania and is the second largest city in the Baltic states. Vilnius is the seat of the main government institutions of Lithuania as well as of the Vilnius District Municipality.
Vilnius City Municipality is one of 60 municipalities of Lithuania and includes the nearby town of Grigiškės, three villages, and some rural areas. The town of Grigiškės was separated from the Trakai District Municipality and attached to the Vilnius City Municipality in 2000.
A 51-member council is elected to four-year terms; the candidates are nominated by registered political parties. As of the 2011 elections, independent candidates also were permitted.
See also Vilnius District Municipality