In the morning, visit the beautiful Naggar Castle which was built in the 16th century. You can explore the castle, art gallery, and temples. In the afternoon, head to the Roerich Art Gallery which features the works of Russian artist, Nicholas Roerich. In the evening, visit the Jana Waterfall and enjoy the serene surroundings.
Spend the day at Solang Valley, which offers stunning views of snow-capped mountains and greenery. You can indulge in adventure sports such as paragliding, zorbing, and skiing. In the evening, head to the Vashisht Temple and take a dip in the hot water springs.
Visit the Great Himalayan National Park for a nature walk and explore the flora and fauna. You can see snow leopards, musk deer, and Himalayan tahr. After lunch, visit the Bijli Mahadev Temple which is located on a hilltop and offers an amazing view of the valley. In the evening, explore Manali Mall Road and shop for souvenirs.
Start early and embark on a trek to Bhrigu Lake, which is located at an altitude of 14,000 feet. The trek is moderately difficult and offers breathtaking views of the mountains. After lunch, visit the Manu Temple which is dedicated to the sage Manu. In the evening, take a stroll through Old Manali and enjoy the hippie culture.
You can consider visiting the Solang Nullah, Hadimba Temple, and the Tibetan Monastery. You can take a side trip to the Kheerganga Trek which is a beautiful trek and offers hot water springs. To maximize your fun, you can try camping, mountain biking, and river rafting. Don't forget to try the local delicacies such as Dham and Siddu.