The building is a showcase of engineering, architecture and interdisciplinary collaboration in Baden-Württemberg. The main body of the building seems to hover above the ground. It is formed around a supporting structure reminiscent of traditional Swabian timber framing. The main body was developed in such a way that the architectural, geometric and structural planning are integrally linked (parametric planning). On the one hand, this approach allows the structure to be optimized to meet a wide range of architectural and structural requirements; on the other hand, it provides the opportunity to respond efficiently to changing user requirements that arise during the planning process, but also after Expo.

The Baden-Württemberg House is a timber hybrid building that stands for the innovative strength of Baden-Württemberg, but also for the importance of sustainability in the region. Wood has always played a significant role for Baden-Württemberg, not least due to the fact that 40% of the state is covered by forest. Many forests in Baden-Württemberg are protected; logging is only allowed here if strict sustainability criteria are met. As a building material, wood is currently experiencing a veritable renaissance. One third of new buildings in Baden-Württemberg are now constructed from wood. This development is also reflected in the Baden-Württemberg House. The facade of the pavilion is made of Baden-Württemberg spruce. The Technology Mirror in particular stands out here. It was built with the help of digital production methods, which made it possible to shape the individual beams into the desired form at no additional cost. It not only offers visitors a great view of the Expo grounds, but also provides sufficient light inside the pavilion and welcome shade during the midday hours. And it fulfills yet another function: Its exciting, individual shape arouses curiosity about Baden-Württemberg.

However, the pavilion's sustainability concept is not only reflected in its wooden construction. The Baden-Württemberg House also focuses on sustainability when it comes to energy supply. The energy demand for the air conditioning of the Baden-Württemberg House is entirely covered by photovoltaics. 540 solar modules on the roof of the building will generate 43,000 kWh over the entire duration of Expo – enough to supply ten single-family homes with energy.

The surface design of the roofed outdoor area takes up the pavilion's basic idea of a floating structure above a (Black Forest) landscape and completes it with additional topics focusing on science and research, which visitors can explore digitally. An abstract topography connects the different surfaces in the outdoor area with each other to form a whole. The terrace (catering), grandstand and the large staircase in front of the pavilion form an abstract “flower meadow” with messages to be discovered — creating an accommodating atmosphere with additional seating options. Using their smartphones, visitors can individually activate “digital flowers” in the landscape which represent different topics and explore them via augmented reality. Innovative objects from partners of the Baden-Württemberg House, sights or a children's tour are projected into the landscape as 3D objects, which can then be experienced from different sides by means of augmented reality. Pleasant freshness is provided by the cold-air lake. The invisible "lake", which is located in the heart of the pavilion, is powered by solar energy and based on air-conditioning technology from Baden-Württemberg. The invisible "lake" is powered by solar energy and based on air-conditioning technology from Baden-Württemberg. Several times a day, the phenomenon becomes visible when small water droplets condense as a floating mist between the cold and warm air layers.