What is the meaning of landmark in bengali?

Meaning(s):

1. the position of a prominent or well-known object in a particular landscape
2. an event marking a unique or important historical change of course or one on which important developments depend
3. a mark showing the boundary of a piece of land
4. an anatomical structure used as a point of origin in locating other anatomical structures (as in surgery) or as point from which measurements can be taken
5. historical or notable sight
6. turning point
7. युगांतरकारी घटना The ceasefire was seen as a major landmark in the fight against terrorism.
8. थल चिह्न The empire state building is a familiar landmark on the new york skyline.