Annapurna sanctuary (Annapurna base camp trekking 4130m.) is well known trekking trail. It’s one of the most beautiful trekking, as some trekking area are really remote so some time there will be a issues with transportation getting  there or get out. Where is Annapurna base camp and Ghorepani Poonhill trekking is close by Pokhara can be fly to and over land both. Advantage of this trek that Pokhara city is touristic but  its beautiful, Lakes and reflecting Annapurna ranges in the beautiful Fewa lake. This is the place to relax after trekking. If time allows.