Last month KR got an update with which they can change the season/scenario of the stronghold. The seasonal ones (Spring, Fall and Winter) are interchangeable for free afaik - besides Summer, which is the default environment.
Any ETA for this content to be released on the global servers, @Roxx ? I really love to decorate my SH/manor, and this would be perfect to set distinct ambiences for different SH presets.
For those who want to take a peek on more stuff regarding this: 영지 무드, 어떤 모습일까? 영지 무드와 신상 설치물 미리보기