Consecration of the Temple of Selune in Stonebridge

The hallow effect in this temple is tied to the main altar stone.
The Identify spell revealed:

Consecrated by the Church of Selune, this altar is the centerpiece of the Temple of Selune in Stonebridge and functions as part of its consecration.

The consecration of the temple has the following effects so long as it remains standing:

• It prevents Celestials, Elementals, fey, Fiends, and Undead from entering the temple, and prevents them from charming, frightening, or possessing those within.
• Lycanthropes within 60' of the temple are frightened.
  (A frightened creature has disadvantage on Ability Checks and Attack rolls while the source of its fear is within Line of Sight. The creature can’t willingly move closer to the source of its fear.)
• Using the controls in the temple, the roof can be made transparent. Full moonlight (or amplified, if the moon is not full) and muted sunlight pass through, but other buildings in town do not block line of sight.

Clerics and paladins faithful to Selune as well as druids of the Circle of the Moon have the following benefits:

• While inside the temple or within 60' of it, the following spells are cast as though they used a spell slot two levels higher:
  • Banishment
  • Counterspell
  • Create or Destroy Water
  • Dispel Magic
  • Fog Cloud
  • Moonbeam
• While inside the temple or within 60' of it, the following spells have other empowered effects (DM discretion):
  • Control Water
  • Dispel Evil and Good
  • Freedom of Movement
  • Greater Restoration
  • Holy Aura
  • Lesser Restoration
  • Protection from Energy
  • Sanctuary
  • Stoneskin
  • Wall of Water