Exhibition of Liturgical Art was fit up in the previous Chapel of Dominic Monastery (the territory of Trakai Peninsular). The exposition displays liturgical things, crockery, apparels, altar tackle, and art objects of religious plot. The interior of the chapel strongly suffered after closing of the monastery (in 1863) and was finished to be renovated in 2004. The mural altars were renewed; the windows were decorated with the stained glass depicting St. Dominic and St. John Nepamukas figures. Under the chapel there is a cellar, where the liturgical set out is on the display. The chapel long ago did not see the scarifying of the mess, and only thanks to the museum this cultural and historical heritage was given back its sacral spirit.

In 1967 a S. Shapshal Karaite Ethnographic Museum was set. In 1997 this exposition was renewed and now it introduces the visitors to the history, traditions, home and customs of Karaite nation. This exhibition is the only which reflects the nation that was brought to Lithuania from Crimea 600 years ago.

Trakai is well known for its unique lakes and the medieval castle complex that was revived from its ruins in the last century. Senieji Trakai and Naujieji Trakai Peninsula and Island Castles are the main features of the region, and today they reflect not only the material, architectural, but also the spiritual heritage of Lithuania. During the years of formation of the Lithuanian state, Trakai was one of the most important political and military cities.

The Castle was built in the 14th and 15th centuries on one of many islands of Lake Galvė with an excellent strategic location as it is surrounded by water on all sides.

The construction of the Castle was started by Grand Duke Kęstutis of Lithuania and finished by his son Vytautas. The latter managed to strengthen and modernise the initial design of the Castle. In 1409, Vytautas the Great made Trakai the capital of Lithuania and moved the state treasury and the Metrics of Lithuania there. For a long time, the majestic stone castle decorated with red bricks served as a royal residence for the Grand Dukes of Lithuania as well as being a cultural centre of attraction.

The structure of Trakai Island Castle appears to be simple and modestly decorated, thus it was considered a masterpiece of medieval defensive architecture, and it was the only castle built on water in Eastern Europe. Trakai Island Castle was home to all the Grand Dukes of Lithuania. Later, Zygmunt II Augustbroke the tradition when he built a palace in Vilnius, at the bottom of Gediminas Hill. 

1951 saw the start of large-scale research works on the territory of the castle, and Trakai History Museum moved in to the restored palace in 1962. Permanent exhibition of the museum is devoted to the history of the town of Trakai, its castles, and the land of Trakai, has been based at the ducal palace of the Trakai Island Castle. In 1992, 16 exhibition halls opened in the western casemates of Trakai Island castle; collections of furniture, pipes, stamps, clocks, china and glass, as well as hunting trophies, are shown there. In May 2005, the exhibition of Liturgical Art opened at the Dominican chapel.