By population or area? If population, and you are prepared to use Wikipedia as a source, which you probably shouldn't, London or Paris. This differs by your definition of city, and where you draw city limits.
Europe itself is a continent and the largest continent in the world is Asia
Nope, that is Antarctica, Europe is the 6th largest continent.
Europe is not the largest continent.
Zürich is the largest city in Switzerland, which is in Europa.
Europe
Innsbruck (literally bridge over the Inn [river]) is a city in Austria; Austria is in Europe, and Europe is part of the Eurasian continent, the largest landmass on the planet.
Europe is the sixth largest continent. However, it is the third most populous.
Europe is the 6th largest continent, yes.
No, Europe is the 2nd smallest continent, or the 6th largest.
Europe
No. Asia is.
Europe