wandering wherever one's feet take one; walking aimlessly
Describes walking without a fixed destination, letting one's feet decide the path. Often used in the phrase 足任せに歩く.
He wandered through the town, letting his feet guide him.
A trip where you just follow your feet isn't bad either.
Compound of 足 (foot) and 任せ (leaving something to), literally 'leaving it to one's feet'.