The most developed museal institute in Northern Bihar is located in the centre of Létavértes. The building was set up by the Calvinist Church of Vértes financed by a 70-million-forint EU project. The ethnographic collection amassed by Dr. István Rozsnyai was moved to this building. The collection that consists of ceramics from the Carpathian Basin is now to be shown at the ornamental ceramics exhibition in the Trans-Tiszanean area.

The Museual Collection of István Rozsnyai is a rare example of how private collections of special value are to be shown to the public.

The building hosting the exhibition is also the location of permanent- and temporary exhibition rooms, a café and an assembly hall. The institute regularly offers museum pedagogical activity, and hosts groups of tourists and children, too.

Also an improvement of the church, a Yurt Camp is open from August 2011. Tradition preserving and gastronomy festivals offered by the institute authentically inform on traditional lifestyle in the region.