Pokémon GO Week in Korea 2017 was the first Pokémon GO Week in Korea regional event. For the duration of this event, Trainers all throughout South Korea found more Pokémon appearing across the country in Pokémon GO.
In Seoul, Trainers were able to battle the Legendary Birds across the city. These Legendary Pokémon did not appear in Raid Battles at the Gyms near Lotte World Mall, but there was a special treat in store for those who visited the area. Trainers at Lotte World Mall had a unique opportunity to encounter Mr. Mime and Unown. 
Selected Pokémon would have increased spawn rates in the wild (and from Incense, Lure Module).
The following Raid Bosses would be available for a time of this event:
Max capture CP 1,743 CP 2,179 CP
Max capture CP 2,015 CP 2,519 CP
Max capture CP 1,980 CP 2,475 CP
Max capture CP 2,115 CP 2,645 CP
- Pokémon GO Events Update–Europe, Korea, and Japan. Pokémon GO Live. Retrieved on 2017-11-03.