Busan Dong-gu Library is a public library where visitors read books among hillside houses on the Sanbokdoro slope in Dong-gu, Busan. From the rooftop Chaemaru Observatory, stacked houses and the night view of downtown Busan are visible at a glance. The remodeled interior is quiet, the books are clean, and there is a photo zone. The parking lot is small and very cramped.