The Lezgin State Drama Theatre opened in 1998 in Qusar and is one of only two professional theatres in the world that stages performances in the Lezgin language. The Lezgins are a Caucasian people of around 700,000 who straddle the Russian-Azerbaijani border; their language belongs to the Northeast Caucasian family and has no close relatives outside the region. The theatre occupies a prominent position on Qusar's central square alongside the post office and the principal hotel.
Performances range from classic drama to contemporary Lezgin-language works and are attended primarily by local residents, though visitors are welcome regardless of language. The building itself, in the post-Soviet architectural style of the late 1990s, is more interesting for its cultural significance than its architecture. The central square where it stands gives a good picture of the town's urban character — government buildings, a small park, a few tea houses — and is the natural starting point for a walk through Qusar.