The impressive Kelpies are well worth the hype. There are several free parking options along the way. But if you want to get as close as possible, then this carpark it the best option. Fixed price of 3.50£ was a very fair deal, especially since the Kelpies, the grounds and the Helix Park are all free to visit.
Overnight parking is possible (costs more though) and there is plenty of space on this carpark. Also chargers for EVs. The spaces are quite big, not problem for bigger vehicles.
From here it's only a short walk to the massive Kelpies. Free toilets on the way as well. There's a shuttle as well, in case walking is not an option. read more