Do any castles remaining in the 21st century still have moats?

Rolfmao.

My ancestral family house in our village used to have a moat of sorts until around two decades ago when the 1998 cyclone turned everything into putty. It was a pretty basic ditch- the water inlets had silted up over the years under British Raj- but you couldn't just hop over it at will.

My ancestors, small-time Zamindars, had probably built it in early modern times to deter Peaceful raiders from assaulting our home proper- though I'm pretty sure any real army passing by saw our folk fleeing to the Lake and staying put in the swamps and islands for weeks.

Moats and brick towers used to be common in Bharata villages at one point; most were demolished following the Arms Act under the British Raj. And we know the Republic hates armed Hindus far more than any London Uffasar did.

The closest major Fortress to Bhubaneswar with a moat is… The Lingaraj Temple. Rolfmao.

The Chodagangas fortified it in the 12th century when they realised that the Peacefuls were actively trying to wipe out all Pagans and pagan temples and targetting their attacks upon our temples proper. The moat has mostly been paved over but the Walls, the major inlets and drains, and some of the feeder lakes remain. They're all being destroyed by the Republic though- like the real Chandaka fortresses used by Oriya garrisons once.

The largest still extant Moat system in the vicinity is at the Barabati Fort Complex, built by the Kesharis in the 11th Century. It's not much of a Complex TBH; the walls and the outlying fortifications, including the glacis were dismantled by the British and whatever remains is being chipped away by the Republic bit by bit but the Moat remains.