I haven't been in person since I was a child, but there are cool pictures of Mexico City's prominent peaks. Popocatepetl has the most striking pictures:
https://implicado.wordpress.com/2012...cos-city-view/
Despite Mexico City's high elevation of 7,350 ft above sea level, Popocatepetl is still very prominent at 17,694 ft., despite being 40 miles away. Extra points because it is active and still fairly regularly causes flights and school to be cancelled.
Another interesting thread would be both the highest peak within city limits, and the widest range of elevations in city limits.