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Otoyomegatari has the best art I've ever seen http://www.mangago.zone/read-manga/otoyomegatari/
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Italy in the 1500s
http://www.mangago.zone/read-manga/arte/
19th Century France
http://www.mangago.zone/read-manga/gisele_alain/
Rural Japan, possibly around 1600-1800s, fantasy
http://www.mangago.zone/read-manga/mushishi/
Seconding Otoyomegatari.
http://www.mangago.zone/read-manga/otoyomegatari/
Tang Dynasty, China
http://www.mangago.zone/read-manga/chouka_kou/
Japan, early 20th century
http://www.mangago.zone/read-manga/golden_kamui/
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Not exactly a historical setting but it's a fantasy period setting and god, the art is goddamn gorgeoous. I can't stop praising it. http://www.mangago.zone/read-manga/tongari_boushi_no_atelier/
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Kami sama no uroko
Tamayura
Golden days
Mo dao zu shi (fanarts not manhua )
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Kami sama no uroko
Rumspringa
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Thanks everyone for the recs! Glad to see many that I did not read before (●'◡'●)ノ
Hi guys, any recommendations for historical mangas that's intricately and beautifully drawn? Thanks~