Route 209 is a route in central Sinnoh, connecting Hearthome City and Solaceon Town. It is also the location of Lost Tower and Hallowed Tower.
Route 209 is a fairly large route that curves around to make a reverse L-shape. It starts from the west, from Hearthome City, where the route makes its way east. There is a large patch of tall grass just north here, just off the path. Back on the path, the route heads east, making its way over to a series of bridges going over a running stream, in which the player must cross in order to reach to the other side. There will be several Trainers to battle on the way, and by going onto a bridge that travels north, then west, the player can find some loamy, soft soil to plant four Berries.
Making its way east again, the player will find the Hallowed Tower near a running stream. By placing an 
Odd Keystone into the tower and talking to at least 32 other players in the Underground, the Hallowed Tower will summon out a Spiritomb to battle. If the player travels north-west, they will reach a 
honey tree, which a player can place honey on to attract wild Pokémon.
After that, the route heads directly north, with a few patches of grass around the place, some soft soil to plant two Berries, and several Trainers to battle. Further up is a steep slope, bike obstacle, for those who want to avoid the tall grass. The Lost Tower is just east from this point. It is a tall tower where dead Pokémon rest. Many Trainers come here to visit their Pokémon that have passed away. Just below the Lost Tower is a tree that can be cut down to obtain an item, 
TM47 (Steel Wing). On the north-west side of the route is a small area that contains the item 
Calcium, that can only be accessed to with a bike in fourth gear. Directly to the north of the route is the entrance to Solaceon Town.
