Thai Berry, Khao Kho Berry Garden in Phetchabun, is a remarkable place to purchase mulberries and a variety of berries surrounded by the picturesque windmills of Khao Kho. The entrance fee is 150 baht for adults and 100 baht for children, while seniors can enjoy free admission. The garden is open daily from 8:00 AM to 5:00 PM, but please note that berry picking and purchasing are only available during the winter season. It's advisable to check with the venue before your visit.