Hi Ali! Here is a list of the best places to visit in Kathmandu:
1. Thamel
2. Garden of Dreams
3. Kumari Bahal
4. Hanuman Dhoka
5. Budhanilkantha Temple
Here is a list of popular treks in Nepal:
1. Annapurna Circuit Trek
2. Ghandruk Trek.
3. Langtang Valley Trek
4. Gokyo Valley Trek
5. Siklesh Trek
You can check out these trips for more details and tips.
Happy Trekking!