The existing Pingtung Library is an example of public buildings built during the authoritarian rein of the KMT with its symmetrical square plan, fortified facade and strong axial relationship to the plaza. The main entrance was hidden from the main boulevard within a park. Thus, the library could hardly be seen with inconvenient access. A new and transparent lobby is attached to the existing building facing the city. This totally transforms the library. At the urban scale, it reorients the entry to face the city and embrace the citizen’s daily life. At the architectural scale, the new glass entry serves as a big open window linking the interior to the exterior, displaying the activities in the library to the city while taking in the surrounding landscape, bringing vitality to the interior. The new lobby is a parallelogram open plan supported by continuous V-shaped steel structure. Several “activity islands” are arranged with triangular elements, including a sunken seating area, a floating mezzanine, and a pair of suspended lanterns. Given its form, use of materials, colors, and its social-cultural meanings, the new lobby is a modern interpretation of a “slate building”, a typical aboriginal dwelling type in Pingtung. Within the existing building, the monumental concrete stairs and the compact shelves occupying the center of the building were removed. This created a pair of double height spaces for seniors and teenagers. The introduction of natural materials, modern furniture and glass partitions helps bring fluidity, transparency and a sense of intimacy to the library. The young adults’ library, centrally located in the building, plays a crucial role in the new programmatic organization. It is a multifunctional space linking multiple floors with an interesting stair, seating areas and a bridge.