[3] The park is managed by the Quebec government through the Société des établissements de plein air du Québec (SÉPAQ).

The park terrain is characteristic of the frontier mountains in the Appalachia region, although the bulk of it is in fact the most easterly of the Montérégie.

The observatory hosts a Ritchey-Chrétien telescope of 1.6 m (5.2 ft) (5'3") in diameter, the most powerful of this type in North America.

If conditions permit, naked-eye observations are possible through the telescope during the Mont Mégantic Astronomy Festival, an event that usually takes place in early July.

Although rare, favorable wind conditions allow many hang gliders and paragliders to leap from the summit of Mount St. Joseph.

The ascent of Mont Mégantic by bike is probably the most difficult in Quebec as well as being the highest elevated road in the province.