Berg is a charming manor house in Louis XVI style from 1803. The house used to belong to the family Homann in Kragerø. The last owner, Miss "Jenia" Homann who died in 1943, donated it to Kragerø Local Authorities for use as a museum. The main building has interior and furniture from different eras, mostly from the 1800s, but also from older periods and from "Jeia" Homann's own time. In addition to the manor house, there are also several buildings around Bergsbukta that have been transferred to the museum. All of them have connection to the coastal culture in Kragerø district. A new exhibition building houses collections from coastal environment and exhibitions devoted to art and coastal culture. The park and belonging forest is a beautiful and popular recreation area with nature trails and fine beaches for bathing in Helle Fjord. There are good parking space, guest harbour and well-protected natural harbour in the area. The museum building has museum shop and cafe.

Berg-Kragerø Museum owns and runs also Kittelsen House in the centre of Kragerø. It is where artist Theodor Kittelsen was born in 1857, and is now a museum for exhibitions of Kittelsen's works.