Amazed that this orchid doesn't have it's thread yet.
Thunia alba (syn Thunia marshalliana as I just found out)
Easy to grow if you know what to do. Don't water until the new growth is 3-5cm / 1-2 inch. Then water regulary untill the leaves fall down then no water untill the new shoot arrives. Flowers every year with beautifull white flowers with a nice scent. Only downside is that in the warm summer the flowers last only a week.
Some people say it's a bit susceptible to mites but I've been growing mine in the living room for 3 years without any problems.