Most of its close relations are natives of hot tropical lowlands. Not quite epiphytic, but closely related to Coelogyne and growing on fallen branches and rocks in cloud forest, are Pleones. They differ from Coelogyne mostly in being deciduous. Several of them are fairly hardy. I grow them among lava rocks in a raised bed.
Calanthes are terrestrial, but they look tropical.
Most of them are. But maybe a dozen range into the Himalayas, southern China, and Japan. They have typically fairly good-sized flowers compared to the size of the plant. They are typically forest dwellers, preferring damp shade. A number are cultivated in Japan, and have made their way into cultivation in England and Germany.