Proposed upgrades to Dalkeith Country Park include an adventure playground, mountain bike trails and walks, together with a food and farm shop within the stable yard.
The ideas are in a planning application submitted to Midlothian Council.
Following community consultation and subject to planning consent, the plans for the new-look Dalkeith Country Park will be finalised and the preferred options implemented over the next few years.
Consultation will take place in the coming weeks and an online survey (www.facebook.com/#!/DalkeithCountryEstate) has been launched to canvass opinions on what new features locals would like to see.
Iain Herbert, the park’s visitor services manager, said: “Although we are still at a very early stage, the submission of our planning application marks a significant milestone in the development of Dalkeith Country Park within its 300-year history.
“The team here are dedicated to breathing new life into this popular park to create a memorable and unique experience for future visitors.
“The views of our visitors and local residents are important to us, so a consultation event will be scheduled in early spring to share our vision and get some feedback on the proposed plans.
“They mark a new era for the park and, we believe, will really put it on the map.”