Many IT-based/non IT-based approaches have been proposed to enrich visitor's experience of museum. They usually provide text-based information or audio-visual information about the explanation of exhibition from given viewpoint. In this study we design tools to assist to find visitor's own viewpoints for appreciation. In this report we describe that observation of a painting under illumination of candle light promotes to find visitor's own viewpoint by focusing on small area. We also propose an electronic candle with 9-axes accelerometer/gyroscope/geomagnetic sensors to analyze visitor's attention.