I will recommend few Korean and also Japanese, and Taiwanese dramas. Korean dramas are very popular international and got such a great quality. They are beautiful, but they are great actors as well. There is quality in their acting.
Korean: I recommend their historical dramas...It is based on Joseon and Goryeo area. They are very well made with their beautiful costumes and language...you will know what I talk about when you watch it...here is a list.
Descendants of the sun,
My love from another star,
W,
School 2013,
Moon lovers - scarlet heart reyo,
Time between dog and wolf,
city hunter,
heirs,
healer,
warrior baek dong soo,
Doctor stranger,
nice guy,
the princes's man,
the moon that embraces the sun,
sunkkyn Kwan scandal,
rooftop prince,
king2hearts,
Japanese:
Code Blue 1, 2 and now 3,
Boys before flowers,
Kurosagi,
koizora,
Hana Kimi
Taiwanese:
Devil beside you, it started with a kiss 1 and 2.
There are American shows as well:
The Originals
the 100
Teen Wolf
The shadow hunters
Daredevil