Client Getting Tile Info on Top Down Game

Hi all.

Currently when my server creates the map it makes an array of GameObjects that contain each tile. If I want to access tile [15,84] I can just look it up in the array very easily.

However, how can I allow my client to look up a tile's info? I can't Sync a gameobject array after all. The Tiles are all spawned in the game, but short of adding colliders to each tile and performing a top down raycast I can't think of how to get a specific tile's gameobject.