Traquair House
Innerleithen, 6 miles east on B7062 · adult ~£13 · open April to October
Inhabited since 1107 and continuously owned by the Stuart family since 1491, Traquair claims to be Scotland's oldest inhabited house, a claim that is hard to argue with. The Bear Gates — closed since 1745 and not to be opened until a Stuart sits again on the throne — are the most photographed element. The house itself, with its brewery (still producing a well-regarded ale), its priest's room, its archive of Jacobite correspondence, and its 20-odd rooms of largely untouched contents, is one of the more remarkable house visits in Scotland.
Neidpath Castle
1 mile west on B712 · admission charged when open · riverside path from town bridge
A 14th-century tower house on a promontory above the River Tweed, accessible by the riverside path from the town bridge. The walk itself — 30 minutes along the river, through mature woodland — is as good as the destination. The castle is not always open for interiors but the exterior and grounds can usually be explored. The view back to Peebles from the castle is one of the better valley views in the Borders.
Glentress Forest
3 miles east on A72 · Forestry Scotland · parking charge · year-round
The most-visited mountain biking venue in Scotland, with trails from beginner (green and blue) to extreme (black runs of the kind that only make sense if you already understand why). Bike hire, a café, and changing facilities on site. The walking trails through the forest are also excellent — quieter than the bike routes, with views across the Tweed valley from the higher paths. A full-day option in good weather; a half-day in reasonable weather.
Kailzie Gardens
2.5 miles east on B7062 · adult £6 · open daily April to October
A 20-acre garden on the south bank of the Tweed, with a walled garden, a pond with waterfowl, and an osprey-watching station linked to a live camera feed from a local nesting pair. The ospreys are the draw — they nest nearby from April and the feed runs through the summer. The garden itself is unpretentious: the kind of privately maintained space where the family's interest in plants is evident and the planting is genuinely good.
Peebles Town & River Walk
In town · free · year-round
Peebles has a good independent bookshop (Peebles Books), several wool shops on the High Street selling Scottish-made knitwear, and enough cafés to spend a morning in. The riverside walk along the Tweed from Peebles Bridge — upstream through Hay Lodge Park, downstream to the remains of Horsburgh Castle — is flat, well-surfaced, and excellent in any dry weather. A morning in the town and a riverside walk covers a day pleasantly without spending much.