Paris-Charles de Gaulle Airport (CDG) is currently organized into three main terminals, but the layout is more complex than it sounds. Terminal 1 is the iconic "octopus" circular building. Terminal 3 is a separate, smaller building primarily for low-cost and charter flights. The most confusing part is Terminal 2, which is actually a massive complex divided into seven sub-terminals: 2A, 2B, 2C, 2D, 2E, 2F, and 2G. These are spread across a vast area and are often treated as individual terminals by airlines. In 2026, the airport has undergone a "renaming initiative" to simplify the passenger journey, but the physical structure remains the same. It is a peer-to-peer "pro-tip" to always check exactly which sub-terminal of Terminal 2 you are departing from (especially 2E, 2F, or 2G), as they are not all within easy walking distance of each other and may require the "CDGVAL" shuttle train to navigate.