In the northwest of Munich we can see the alps quite often (around 100km from there), and sometimes they appear quite huge. It's due to the Föhn that makes the atmosphere act as a magnifying lens. Interestingly the explanation is not in the English Wikipedia

https://de.wikipedia.org/wiki/F%C3%B6hn#Optischer_Vergr%C3%B...

Sure, you can see the mountains only as "slightly darker shapes" as the parent put it but you could identify individual summits I think.