*every* city in Europe? That's a tall order. I haven't done that yet. But I have been to Spain, now. In addition to spending time in Madrid I also saw Valencia, Barcelona, San Sebastian, Burgos, Toledo, and Figueres. Nice country.
At this point I have almost visited every *country* in Europe. The only ones I haven't been to are Portugal, Iceland, Ireland, Luxembourg, Liechtenstein, and Malta. But I'm still quite a ways away from having visited every city.
I've also never been to Dallas, Guangzhou, Shenzhen, Shanghai, Mumbai, Beijing, Osaka, Kolkata, Tianjin, Bangalore, Chennai, Nagoya, Hyderabad, Xiamen, Chengdu, Wuhan, Ahmedabad, Hangzhou, Chongqing, and probably some other Chinese/Indian cities over 6.5 million... but... since you're basing this on my countries visited map then the cleverly worded title works and this isn't an error.
At this point I have almost visited every *country* in Europe. The only ones I haven't been to are Portugal, Iceland, Ireland, Luxembourg, Liechtenstein, and Malta. But I'm still quite a ways away from having visited every city.