sentence1: At an altitude of more than 640 meters (2,100 feet), this city on the Castilian plateau, Europe's highest capital, is scorching in summer, when wilting residents flee for the coast or cooler northern climes, and freezing in winter, when many Madrilellos bolt for the Sierra Nevada, just a couple hours south, to ski.
sentence2: Madrid is the lowest capital city in the whole of Europe.