Short answer: Totnes climbs from the Dart to a Norman castle, so there is height everywhere. The flat ground is the Plains by the river, where the Steam Packet and Waterside Bistro are, and the river reflects anything launched over it.
Totnes runs steeply uphill from the river to the castle, which means viewpoints at several levels. The Dart at the bottom reflects anything launched over it, and being inland the weather is kinder than on the coast.
Totnes Bonfire and Fireworks, Aller Park Field — Saturday 7 November. Totnes is one of the few in this guide where the tickets genuinely sell out and there is nothing on the gate, so booking is not a formality. The Christmas lantern parade through the town follows on Thursday 17 December.
Dates and times come from the organisers' own listings and the regional what's-on pages, checked in late October. Small displays are run by volunteers and can move or sell out, so confirm with the organiser before you travel — particularly for anything ticketed.
Going further afield, or the local one does not suit? Every confirmed firework display in Devon is on one page here, listed by date.
Totnes Castle itself closes before dark for most of the year, so plan on the streets rather than the keep.
Stay low. The main car parks are down by the river, which is also where the pubs are — and walking uphill in the dark with children is a job.
The steam railway station car park is around £7.50; there is free parking on the nearby industrial estate.
Bringing a dog is rarely a good idea on a display night — see the guide to Bonfire Night with a nervous dog for what actually helps.
See the full Totnes guide, filtered by who's with you.
Plan your day near Totnes →