The palace of Junnelius, as the apartment building is known, was finished in 1895. Robert Junnelius, municipal councillor and Hugo Rosenlew, consul, were the developers of this Venetian-style renaissance palace. The building was designed by August Krook and it is said that he went as far as to visit Italy in order to obtain the right kind of building style that he wanted.

Pori City bought Junnelius palace in 1962. Due to high maintenance costs, it was decided to transform the building, threatened by demolition, into City Administration offices. In 1991 extensive renovation work was started, with the purpose of preserving a part of Pori's valuable building heritage for future generations to enjoy!