The Estrel Congress Center in Berlin is the largest congress center in the capital. For the extension with a hypermodern auditorium, brandherm + krumrey created the interior design of the two-story new building. A differentiated color and space concept was developed for the event areas with the latest high-tech equipment. The focus of the clear design is the unique experience of the events. The new building optimizes the already existing convention center with 5,000 square meters of additional event space. The auditorium for almost 800 people and ten event rooms are distributed over the two floors connected by escalators and open foyers. For atmospheric enhancement and better orientation, the individual areas differ in their color scheme. For example, the central auditorium is a festive blue, while the meeting rooms are accented with an earthy red. The foyers, on the other hand, are dominated by a gray sandstone shade. This also forms the background for some modern works of art that act as eye-catchers here. The functional and technical requirements for event operations were a particular challenge in the design of the space. Equipped with streaming encoders and remote cameras, among other things, all rooms can be used hybrid and networked with each other. The auditorium also features rising rows of seats, specially designed acoustic walls and a 48-square-meter LED wall. With deliberate restraint, the interior design focuses on what is happening on stage. Unobtrusive colors and materials give the rooms a modern look and at the same time create a relaxed ambience for events. The haptic effect of the surfaces plays a significant role here: materials such as wood, natural stone and brass convey a spatial effect that is both clear and calm. Accents are provided by the advanced lighting technology, which can be used to highlight individual areas or to illuminate everything atmospherically. The auditorium also convinced the governing mayor of the capital. At the opening he spoke of the new building as an “important project for Berlin as an internationally networked metropolis and as a location for trade fairs, congresses and events”.