In Pokemon crystal where do you go after azalea town?

After Azalea Town in Pokémon Crystal, you should head east to Route 33 and then into the Union Cave. You'll need to navigate through the cave to reach Route 34, where you can find the Goldenrod City entrance. Goldenrod City is your next major destination, featuring various facilities, including the Pokémon Center, the Department Store, and the Gym.