Berlin Brandenburg Airport (BER) is the third largest airport in Germany by passenger volume, trailing only Frankfurt and Munich, but its "size" is often a matter of perspective compared to global mega-hubs. Spanning approximately 3,600 acres (1,470 hectares), it features two main runways and three terminals. While it is physically expansive, its layout is more centralized than the sprawling multi-terminal complexes of London Heathrow or Paris Charles de Gaulle. Terminal 1 is the primary hub, designed with a "one-roof" concept to keep walking distances manageable. However, the airport was famously designed to be much larger and more efficient than its predecessors, Tegel and Schönefeld, though it struggled with a decade-long construction delay. In the context of European aviation, it is a significant mid-to-large hub, but travelers used to the massive footprints of airports like Dallas/Fort Worth or Denver will find it relatively contained and easy to navigate once inside the main hall.