へ行(い)く is a common construction used when describing a place that someone/something is ‘heading’. The particles
に and
へ are interchangeable, but there is a slight difference in meaning.
に has the nuance of ‘going to’, while
へ has the nuance of ‘heading to’.
In these examples, while they may seem the same at first glance,
へ focuses much more on the journey, while
に puts more emphasis on the destination. This is true for other uses of
に and
へ as well.
に will always put more focus on the destination of an action, where
へ will put more emphasis on the distance traveled/between the origin and destination.