Fissured Stack is an observatory tower situated in Iceland, carefully designed to engage with the geological features of its surroundings. It combines education and recreation, offering visitors a chance to observe the distinct Icelandic landscape. The tower provides stunning views of prominent natural landmarks such as Mývatn, Krafla, and Hverfjall.

Concept and Design Elements

The structure is rooted in two main ideas: the “Stack” and the “Fissure.” The Stack represents a vertical column of eroded rock that showcases layers of history. It symbolizes the natural formations in the area and influences the overall shape of the tower. The Fissure indicates the flow of hot groundwater, reinforcing the connection to the local geology and enhancing the sense of place.

Sustainability

Sustainability is a key consideration in the design. The tower incorporates geothermal heating from the nearby Bjarnarflag power plant, which reduces energy needs. Thick concrete walls with continuous insulation provide high thermal mass, helping to maintain a comfortable indoor environment. This approach reflects a commitment to environmental responsibility, ensuring that the tower operates efficiently even in harsh winter weather.

Materiality and Interior Experience

The tower’s materials further connect it to the landscape. The curved walls are designed to resemble basalt columns, an element commonly found in the region. Inside, fissured slabs create paths that guide visitors along a staircase. This journey culminates in an observatory deck and a tea house lounge situated at the top, encouraging exploration and interaction with both the building and the environment.

Pathways and Lighting

Visitors navigate the site using pathways made from charred wood and metal decks that have been repurposed. These materials not only provide a natural aesthetic but also define functional areas. A daylight sensor on the roof activates low-wattage LED lighting embedded in the pathways, addressing the limited daylight during Icelandic winters. This feature reduces light pollution while enhancing visibility for guests.

At the tower's summit, visitors encounter expansive views that blend architecture with the natural world, significantly engaging with the beauty of the Icelandic landscape.