According to Wikipedia:
The Czech Republic (/ˈtʃɛk rɪˈpʌblɪk/ CHEK ri-PUB-lik; Czech: Česká republika, Czech pronunciation: [ˈt͡ʃɛskaː ˈrɛpuˌblɪka] also known as Czechia (/ˈtʃɛkiə/ (About this sound listen), CHEK-ee-ə; Czech: Česko, pronounced [ˈt͡ʃɛsko] , is a nation state in Central Europe bordered by Germany to the west, Austria to the south, Slovakia to the east and Poland to the northeast. The Czech Republic covers an area of 78,866 square kilometres (30,450 sq mi) with a mostly temperate continental climate and oceanic climate. It is a unitary parliamentary republic, has 10.6 million inhabitants and the capital and largest city is Prague, with over 1.2 million residents. The Czech Republic includes the historical territories of Bohemia, Moravia, and Czech Silesia.
Okay, now that we got the technical stuff out of the way, the real porn truth about the Czech Republic is that it's a relatively free place filled with very sexy and well built girls. They are sexually quite liberated, and more than willing to get naked for the camera. As a result, the Czech Republic has been a production line for some of the hottest babes in porn - many with natural big tits over D cups.