It is not an exaggeration to call Tempelhof Airport one of the most remarkable buildings in Europe. Architect Norman Foster has indeed gone as far as to call it 'The Mother of All Airports,' which in many ways it is. Way ahead of its time, Tempelhof served as something of a blueprint for a glut of airports built around the world when international travel first became accessible to ordinary people in the 1950s. Guided tours of the now empty, timewarp terminal building offer a unique insight into this majestic construction, which, while often called 'the Nazi airport' did not in fact open until after the end of World War II. (Construction had begun almost a decade before). The airport then became a symbol of the Cold War, and of freedom, when it was the base for the mercy flights which kept West Berlin fed during the Berlin Airlift of 1948-49. Alas, by the end of the 1960s its capacity had been exceeded and after Tegel Airport opened in 1975, most of Berlin's air traffic relocated there. The last commercial flight took off from Tempelhof in 2008. The runways, aprons and grounds of the airport are open as a public park.