Deutsche Telekom's Representative Office in Berlin-Mitte is housed in the largest and oldest surviving building from the earliest period of telecommunication in Germany. Its impressive presence has made the building something of a symbol of the identity of the city. Built between 1863 and 1878, the building – which originally housed the country's central imperial telegraph office remains to this day the most expensive and complex postal building ever constructed in Germany. In the many decades between the time it first opened its doors and 1992, it served as the nerve center for long-distance transmissions and telecommunications in Berlin.
Today the building connects the world of interactive media with the immediate reality of futuristic technology, uniquely linking the past with the future into a unified whole. Its historic façade has been extended with a new glass construction that gives visitors an unrestricted view of its brightly-lit atrium. The effect is to create a stylish, modern atmosphere.