How can we turn the abandoned military oil tanks into a place that provides new programs for the public? The existing five tanks, isolated within Seoul’s city center, already create a unique juxtaposition of industrial object and landscape, but lack activation by human activity. I would like to suggest a new cultural place holding possibilities of reminiscing nature and people in the past without damaging current environments. Rather than imposing figures and civil facilities, such as rain water collectors or libraries which require extensive amendment of complicated infrastructure, the project proposes a simple reconfiguration of the space to foster public gathering and dialogue. Given the site’s isolation and age, extensive retrofitting to enable high tech luxurious programs would not be feasible. Conversely, I would like to return these abandoned five facilities to nature with a light handed approach, rather than radical, rapid changes. In other words, it should be a poetic figure like artwork camouflaged into nature.
The circle in the plan was reinterpreted as a historical arena-like auditorium, optimized  for acoustic performance. Although the ground floor of the five figures is 15m distant from the approachable level in mountain, stairs of promenades bridge outer and inner spaces beyond the sectional limit. Programs should not be inserted coercively on the site. With maintaining the figure, the oil tank turns into new musical instrument combining real nature with artificial nature to create a field of breezing optics. The empty cylinder is independent from noise of outside, and at the same time, sound played by a performer resonates in the cylinder. Optics works as a reflector for acoustic optimization as well as accommodates the public and the nature with harmony above the tank. As a landmark on this site, it lights like a firefly at night and reed beds during daytime. Finally, by integrating natural elements and artificial nature, the proposal blurs the boundary between the five oil tanks, people and the environment. The whistling of the sound through the interactive fur attracts passerbys to further animate the condition by touching the tips of the reeds. The surface of the cylinder was kept and modified in an optimal way, while optical bars allow light and sound to penetrate two different space conditions. The sound provides the public with resonant and poetic spaces. The space is enclosed by the cylinder of past history, yet still opens to the public rather than being segmented by programs and spaces.
Thus, the rhythmic spatial sequence allows people to circulate with the flows of sound. The auditorium can be used as a lecture hall which can project a film on temporary screen. Cut-offW parts of the cylinder can be reused to create sculptures for the nearby mountain and abandoned parking lot. Sound waves create a gentle wave of ceiling and convey the movement from inside to outside. The gentle waves of light and sound become an interface between visitors and players, and lead people to interact actively with nature. It touches the heart of the public not only with a sense of sight, but also sound. During the day, numerous optics camouflage into the background nature, and then turn into a movement of light features that react to wind, people, and sound of cultural activities at night.