Derby's museum and art gallery has reopened after asbestos was removed from its roof as part of an £800,000 refurbishment plan.
The building was closed on 18 October so asbestos could be removed and other refurbishment work started.
A lighting upgrade and installation of a disabled lift will continue, with completion expected in March 2011.
The city's central library was also closed for roof work costing about £84,000.
Councillor Alan Grimadell said: "These works and the introduction of free wi-fi at Derby Museum and the Central Library illustrate the council's commitment to improving cultural facilities for the long-term benefit of Derby and its residents."
The annual Derby City Open exhibition did not take place because of the work but it will return during October 2011.