Fukuoka, Japan. There's nice restaurant with counter overlooking the apron and runway. In Japan, airplane spotting is a joy. Going to check out the new Terminal in Haneda soon.
I recall when at LHR few years ago being told the balcony was closed. The person told me 'since the gulf war' ..
Further back ,, the mid-eighties - I vividly remember the outside gallery at LHR and the happy atmosphere.