If you live in, or are visiting, the central belt of Scotland I would highly recommend a visit to The Kelpies. They are a very popular modern attraction and it's not hard to see why.
Accessible Parking ✅
Accessible Toilet ✅
Play Park ✅
Accessible Equipment in Play Park ❌
Cafe (Tearoom) ✅
Due to the fact they are relatively new, the disabled facilities and access features in Helix Park are very good. There are two mains car parks, both with a number of blue badge bays, and there is a good sized accessible toilet in the main visitor centre.
The clip below follows the path along the canal from The Kelpies, through Falkirk, and onto the Falkirk Wheel - another big modern Scottish attraction.