While discovering Carlsbad and trying to save his human alter ego, Nam Shin III (Seo Kang-joon) passes through this colonnade as seen in a flashback in episode 3 of Are You Human?/Are You Human Too (너도 인간이니?) (KBS2, 2018). It was also briefly seen in episode 2, when human Nam Shin (Seo Kang-joon) passes by this building after he has noticed that he is been followed.
The Mill Colonnade [Mlýnská kolonáda], built between 1871-1881 in a Pseudo-Renaissance style and designed by architect Josef Zítek, is the largest colonnade in the Czech town Carlsbad [Karlovy Vary] counting five hot springs. It sits right in the center of Calrsbad/Karlovy Vary next to the Teplá River.
Address: Mlýnské nábř., 360 01 Karlovy Vary, Czech Republic
Geolocation: 50.225235, 12.881832
— submitted by Thom Musni