用英语表达“登山可参观”可以有多种方式，以下是一些常见的表达：
- The mountain can be climbed for sightseeing.
- Climbing the mountain is possible for visiting attractions.
- There’s a trail for mountain climbing to visit the sights.
- You can scale the mountain to explore the attractions.
- The mountain offers climbing opportunities to view the attractions.
- Visiting attractions is accessible by climbing the mountain.
- The mountain is open for climbing to see the attractions.
- Hiking the mountain allows you to visit the scenic spots.