Tempelhof is designed as a semi-oval with 14 towers. The roof was originally intended to be used as a viewing platform for the audience at big Nazi events, such as Hitler's birthday. The airport was only completed during World War II and was used as a giant aircraft factory.
The airport is notable both for its role in the Berlin Airlift and as an example of Hitler's architectural ambitions. There are still a few remnants of the grandiose plans for Hitler's favorite airport. The present building, designed by the architect Ernst Sagebiel, was to impress visitors to Germania, the planned capital of the victorious Reich.
Despite the latest clean-up plans, the long-term future of the Tegel Airport -- historic Cold War facility -- remains unclear. Berlin's air traffic is scheduled to relocate to a large new Berlin-Brandenburg International Airport (BBI) in 2011.