Yoichi's Crossroads is a small Mongol camp on Yoichi's Slope, just inside Hiyoshi on the Ariake border. It is a good stop for iron and stance progress, plus an artifact and a Singing Cricket.
The camp is in thick bamboo and trees around an old cemetery. The Mongols put up a flag, a yurt, a rough stable and a big bonfire. A body on a pole marks the west opening.
Possible bonuses include a Perfect Parry kill, assassinations from above and observing the Mongol leader.
Adachi Estate
Adachi Estate is the abandoned home of Clan Adachi in Izuhara, where most of Lady Masako's family was murdered. You investigate it in The Tale of Lady Masako and come back during The Husband.
Aoi Village
Aoi Village is a village on the Tsutsu Plains that the Mongols occupy at the start of Act 2. Freeing it gives you the Key of Aoi, one of the keys for The Unbreakable Gosaku.
Arrow Peak Shrine
Arrow Peak Shrine is a Shinto shrine climb in Azamo, Izuhara, dedicated to Inari, kami of agriculture. Reach the summit to earn the Charm of Inari, a major charm: increases the supplies, predator hides, bamboo and yew wood you collect.
Azamo Bay
Azamo Bay is a Mongol-held port town in Azamo Prefecture. You sneak in during The Broken Blacksmith to rescue Taka, then free it for good in Unfinished Business.