The two key places in “It’s Okay To Not Be Okay” were actually filmed at two different cafés.
1. Ko Moon Young’s Cursed Castle: Sanida Café
The Cursed Castle is Ko Moon Young’s (portrayed by Seo Ye Ji) residence and a gift from her father, who hoped that she would live her life as a sheltered princess.

The exterior of Ko Moon Young’s cursed castle in “It’s Okay To Not Be Okay” is actually made of CGI, and is filmed in a café called Sanida Café.
Sanida Café is located at Gangwon-do, South Korea, and is open from 10AM until 10PM. Here’s a quick tour of the fantasy-like café:
2. OK Psychiatric Hospital: Secret Blue Bakery Café
The hospital is the place where Moon Gang Tae (portrayed by Kim Soo Hyun), Nam Juri (portrayed by Park Gyu Young), and most of the key characters work. It’s also where a lot of the scenes from the series take place.

Although some parts of the interiors were filmed at a different location, the exterior of OK Psychiatric Hospital was actually filmed at Secret Blue Bakery and Café. The seaside-café is located near the Ayajin Beach in Gangwon-do South Korea. It is open from 10AM until 8PM.
Here’s the interior of Secret Blue Bakery and Café, which feature posters from “It’s Okay To Not Be Okay.”
Would you visit these places if you had the chance to travel to South Korea?