Two of the town's earliest buildings, also featured on Australian ten-dollar note (see The Greatest Wonder) renovated and extended, house an interactive educational and tourist facility based on the UNESCO listed Holtermann Collection - photographs taken for Bernhardt Holtermann during the "roaring days" in the 1870s.

[2] Designed by architect Jiri Lev, the museum space is formed by a series of three interconnected multi-functional pavilions built behind the restored heritage street-front buildings.

The museum design employs passive solar heating and natural cooling and lighting.

The museum, also supported by NSW Regional Cultural Fund,[4] was visited by New South Wales premier Gladys Berejiklian and minister Troy Grant on 2 July 2018.

[5] Gulgong Holtermann Museum officially opened on 26 October 2019.