[2] Not far from the foot of the hill is the Allt Ghoinean burn which is claimed to be the Gonan or Monan of Sir Walter Scott's poem The Lady of the Lake:[2] There is a large hydro-electric power station in St Fillans, fed from a dam at Loch Lednock high above the village.

[3] The power station, which forms part of the Breadalbane Hydro-Electric Scheme, is not visible within St Fillans as it is underground and was hewn from solid rock.

The section of the River Earn from St Fillans down to Comrie, along with much of the surrounding countryside, is designated as a national scenic area (NSA).

[5] The River Earn (Comrie to St Fillans) NSA covers 12 square miles (3,108 ha) in total.

[6] The village became the scene of controversy in November 2005[7] when a housing development was halted to avoid killing the fairies who allegedly lived under a rock on the proposed site.