Lasers are very precise and reliable tools concerning many conservation-restoration procedures. Removal of unwanted surface impurities and layers is a delicate process that needs handling with great care. The laser cleaning technique is applied successfully in many case studies. The goal of this paper is to highlight the potential of the lasers for restoring archaeological artefacts and artworks. Some cleaning experiments on stone and metal surfaces performed with Q-switched Nd:YAG laser and CuBr vapour metal laser are presented as well.