The museum was ceremonially opened on 08 August 2015, on the very eve of the 300th anniversary of the Alka of Sinj. Thus, in the atmosphere of celebrating the third century of its existence, the Alka Knights Society and the museum holdings of old Alka uniforms and equipment finally found an adequate home under the roof of this intriguingly decorated museum.

The beginnings of the Museum of the Alka of Sinj go about a hundred years back, which is when the idea about establishing separate premises for the needs of the Alka and the Alka Knights Society, which did not own any property at the time, was born. In the period after World War Two, Alka uniforms, weapons and equipment were kept as a separate collection at the Museum of the Cetina Region, after which they were, up to the 1990s, exhibited as a reference collection on the premises of the Alka Knights Society in the former home of Kruno Tripalo, an early 20th-century duke. The greater part of the house was purchased from his successors in 1990s and became ownership of the Alka Knights Society. In the 1980s, the Alka Knights Society gained ownership of one part of Kvartiri, a military complex from the 18th and 19th century.

In the early 21st century, the Alka Knights Society obtained ownership of the entire Kvartiri complex, after which the old idea of an Alka headquarters in a much more appropriate setting than that of Tripalo’s house ˝under the church˝, i.e. on the street Šetalište Alojzija Stepinca, slowly began to become reality.

An important step in the realisation of an Alka museum were the Spatial Plan and the Permanent Exhibition Concept for the Museum of the Alka of Sinj that were drafted together by the museologist Ivo Maroević and the architect Duško Dropulić in 1987, already bearing Kvartiri in mind as the premises. The final construction design of the Halls and Museum was created by the Faculty of Civil Engineering and Architecture of the University of Split and the main project designer Ante Kuzmanić, who was selected through the call for construction projects issued by the Alka Knights Society in 2001. The concept of the permanent exhibition of the Museum of the Alka of Sinj and the design of the Alka Halls as a museum space were created by Joško Belamarić and Ante Milošević, while the interior design project was created by Nikolina Jelavić-Mitrović.

With the establishment of the Alka Halls in Kvartiri, finally all of the prerequisites were met for presenting the Alka of Sinj through a museum format that is open to the public, visitors, group visits and, above all, the people of Sinj all year round. Thus, in the atmosphere of celebrating the third century of its existence, the Alka Knights Society and the museum holdings of old Alka uniforms and equipment finally found an adequate home under the roof of this intriguingly decorated museum.