Walkthrough
Circhester is home to sixth Pokemon Gym, which will vary depending on which version you are playing. Outside of the Pokemon Gym, their isn't much to Circhester outside of the being home to the Hero's bath and Draco Meteor Move Tutor. You can battle Game Freak's Morimoto in Circhester after becoming The Galar Region Champion (he'll Dynamax his Snorlax when you do).
Move Tutor
Draco Meteor Tutor: Can Be Found Within The Hero's Bath Area
Trainers
Game Freak's Morimoto: Level 65 Cursola, Level 65 Grapploct, Level 65 Stonjourner, Level 65 Dragapult, Level 65 Coalossal, Level 65 Snorlax
Items
Wide Lens: Help Howses In Hotel Ionia
Oval Charm: Defeat Morimoto In Hotel Ionia
Catching Charm: From Game Director In Hotel Ionia
Shiny Charm: From Game Director In Hotel Ionia (Full Pokedex)
TM27: From Man In First Western House
TM51: Near Western Pillars Of Hero's Bath
TM16: From Hiker In Hotel Ionia
TM47: From Musician In Hotel Ionia
Pokemon Center PokeMart Items (Through Storyline Progression)
Poke Ball, Great Ball, Ultra Ball
Potion, Super Potion, Hyper Potion, Max Potion, Full Restore
Antidote, Burn Heal, Ice Heal, Awakening, Paralyze Heal, Full Heal, Revive
Escape Rope, Repel, Super Repel, Max Repel, Poke Doll