emaureeng:
There is a Spanish fantasy series I've enjoyed, El Ministerio del Tiempo - The Ministry of Time. This is a government agency that watches over the time line and sends out groups of agents when something seems to have changed in Spanish history. Their building has a series of time doors, each going to a specific date and place, but the guide to the doors is a guarded secret. The agents themselves come from various centuries and have different types of expertise.
https://www.imdb.com/title/tt4136774/
Interesting, I like time travel series and South Korea has been doing quite a few lately.
The subject reminds me a bit of Timeless, the US series.