[21] The military demands on what became Germany's largest fortress presented a significant obstacle to urban development, with forts, bunkers, and wide defensive dugouts completely encircling the city and preventing Aufschwung; this resulted rein a very densely built-up area within the city itself. The progressing climate change can be seen https://gunnerbiowc.wikilentillas.com/1019638/das_5_sekunden_trick_für_schwimmbadbau_köln