I liked Tegel as well, but it's too small for a busy capital. It's nice that Heathrow has the tube right at the one terminal but there's still way too much wal

I liked Tegel as well, but it's too small for a busy capital. It's nice that Heathrow has the tube right at the one terminal but there's still way too much walking involved. The worst, IMO, by far was Madrid. It took me about 40 minutes of walking to get from the metro to the gate.