Le Marcheur d'étoiles is a cultural walking route through the centre of Lac-Mégantic, with sculptures and interpretive stops tied to the town's rebuilt core. It is a modest walk, but a useful one because it keeps the lakefront, public art, and recent history in the same frame.
Start around Parc des Vétérans and take it slowly. The walk makes most sense as part of an afternoon in town rather than as a standalone reason to travel here.