All Treasure Vaults in Hogsmeade Valley

Treasure Vault #1 - East of Hogsmeade Village: Located east of Hogsmeade Village. This vault has no associated puzzles but is guarded by Dark Wizards and Witches. You can defeat them first or run in to loot the chest at the end of the cave.

Treasure Vault #2 - West of the Falbarton Castle Floo Flame: Found west of the Falbarton Castle Floo Flame. No enemies guard this entrance, but you need Level II in the Alohomora spell to unlock a gate. You can increase your Alohomora level by finding Demiguise Statues.

Treasure Vault #3 - West of Upper Hogsfield Floo Flame: Situated northwest of the Hogsmeade Valley, near the Forbidden Forest border. Undead enemies guard the entrance; use fire-based spells like Incendio or Confringo to make them vulnerable. The door requires Level III in the Alohomora spell to unlock.

Treasure Vault #4 - Northeast of the Upper Hogsfield Floo Flame: Located northeast of the Upper Hogsfield Floo Flame in the northern part of Hogsmeade Valley. While surrounded by enemies, you can fly directly to the cave entrance on your broom, dismount, and enter undetected. No puzzles are required to open the chest inside.

Treasure Vault #5 - East of the East North Ford Bog Floo Flame: Found northwest of Treasure Vault #4, or east of the East North Ford Bog Floo Flame. This vault requires a puzzle involving the Accio and Confringo spells. Pull a nearby magical object onto the platform in front of the cave entrance using Accio (or Wingardium Leviosa for more accuracy), then aim at the object and cast Confringo to set it alight, opening the door. The chest is at the end of the cave.