The Natural History Collection of the Regional Museum of Travnik is currently organized in the same manner as it was in 1975. All the materials which were used for the collection were collected at the end of the 19^th and at the beginning of the 20^th century.

There are nearly 40.000 items displayed, with 825 items in the permanent museum’s exhibition and the remaining material is placed in the museum’s depot which is also occasionally used for theme exhibitions. Exhibits come from all over the world but from Bosnia and Herzegovina and the Travnik region, too. A permanent exhibition is displayed in 32 cabinets placed in 5 rooms. Next to each exhibit there is a label with the name, place of discovery, folk and scientific name, and there is also additional information in text related to the exhibition. Drawings and photographs are also displayed.

The permanent museum’s exhibition of the Natural History Collection consists of three parts: paleontological, mineralogical, petrographic and zoological.

In the paleontological part of the Natural History Collection there is a developmental tree of all living creatures and fossil material distributed according to geological periods. In one of the cabinets are fossil remains collected from all over the world, and in two of them there are tertiary and quaternary fossils of Bosnia and Herzegovina.

The mineralogical and petrographic section is made up of rocks, minerals and crystals collected in various regions, and in one of them are mineralogical and petrographic materials from Travnik and surroundings.

In the zoological part of the permanent exhibition of the Natural History Collection there are many rare specimens peculiar for their beauty, or important for some other reason.

Within the Natural History Collection, its founder professor Erik Brandis is represented too through documents. Next to the showcase which contains his published works, labels, plants and minerals lists, in this “Brandis Herbarium” (algae and lichen) are also two texts on his activity as a friar and natural historian.