Upvote:2
had a 16 hours layover at London Heathrow and I got a 24 hours transit visa
No, they let you in without a visa.
Can the same be possible for Paris?????
No, visas on arrival in Schengen countries are only issued in case of emergencies where the applicant was unable to obtain a visa in advance due to time constraints. This is hardly an emergency, hence you're not eligible.
So you need a Schengen visa in advance