The quality of the physical environment is an important factor to assess in evaluating programs in early childhood education (ECE). However, children's evaluation of the quality of their physical environments in ECE has been rarely explored. Across two kindergartens, 32 children, aged 5 years, were interviewed to rate photographs of features in the outdoor, inside, and wall environments of their kindergarten. Analyses of children's qualitative explanations of their rating identified seven factors into which their explanations could be categorized. Children's perceptions about difficulty of use and functionality were the most common factors identified, while issues in layout, availability, physical attributes, maintenance, and access were also mentioned. This evidence suggests that children can offer authentic and specific suggestions about their environment that can contribute to efforts for continuous improvement in ECE settings. The research provided evidence that five-year-old children are competent to speak about the qualities of the physical environment that influence their daily life.