へDirection marker
Marks the direction or destination toward which someone or something moves. It often appears with verbs meaning go, come, return, proceed, or head toward.
What it emphasizes
へ points toward a goal. It is especially natural when the sentence presents movement in a direction rather than focusing tightly on reaching an endpoint.
Common movement
Questions and noun modifiers
Use どこへ to ask about direction. Before a noun, add の after the particle.
Direction versus endpoint
With common travel verbs, both へ and に can mark the goal. The first points toward the direction of travel; the second more directly marks an endpoint and also has uses with arrival and placement that the direction marker cannot replace.
東京に行きます。
I am going to Tokyo.
AnalyzeHere the endpoint marker is natural. With this travel verb, 東京へ行きます is also natural and gives slightly more attention to the direction of travel.