Baldur's Gate 3 arcane tower Guide

The Arcane Tower is a significant location situated in the south-west corner of the Underdark in Act One of Baldur's Gate 3. Once the home of Lenore De Hurst, who has been missing for over a decade, the tower is now guarded by automated Arcane Turrets that pose a lethal threat to unprepared adventurers.

Accessing the Tower

The tower is located past the Torchstalk Gulch, a path characterized by deep red mushroom clusters and embers. Upon arrival, you will notice the exterior is guarded by Arcane Turrets. These turrets are hostile and fire at any party member within their line of sight.

Dealing with Arcane Turrets

The turrets attack in both real-time and turn-based modes. It is highly recommended to enter turn-based mode to manage your movement carefully. To bypass them, you can break their line of sight using solid obstacles or by casting Fog Cloud. Once you successfully restore power to the tower’s generator, the turrets will power down, making the exterior and interior safe to navigate.

Entering the Grounds

The front doors are locked and require a DC 15 Sleight of Hand check to pick. Alternatively, you can reach the ground floor by jumping down the mushroom platforms on the exterior. It is advisable to use the Feather Fall spell to avoid fall damage. You can also use Fly or Misty Step to reach the lower levels safely. If you find the small hole at the named location; verify the current map, you can send a small summon, such as Mage Hand, through to pull the lever and open the door from the inside.

Restoring Power to the Arcane Tower

The central elevator is disabled upon your arrival. To restore power, you must reach the Ground Floor generator room.

1. Locate the Generator: Inside the ground floor, you will find a furnace.
2. Find a Sussur Bloom: You need a Sussur Bloom to power the generator. These can be found in the garden just outside the tower or at the base of the giant Sussur tree in the Dread Hollow.
3. Activate: Interact with the Power Generator and combine it with the Sussur Bloom.

Once powered, the elevator becomes operational, the Arcane Braziers light up, and the Arcane Turrets deactivate. This action rewards the party with 25 XP and provides the "Heart of the Creator" inspiration to characters with the Guild Artisan background.

Floor-by-Floor Breakdown

First Floor (Greenhouse)

This level is essential if you are completing the quest to help Omeluum investigate the parasite, as it contains all the necessary mushrooms. You can also find the "Threadbare Book" here, which contains a specific phrase useful for interacting with Bernard on the roof.

Second Floor (Main Entrance)

This floor serves as the main entry point from the outside. A notable object here is the "Chest of the Mundane" on the northern balcony. Use an Arcana check to reveal its true nature. Once the illusion is dispelled, you can loot items like "Mystra's Grace," which grants an additional casting of Feather Fall.

Third Floor (Bedroom)

This floor contains vital lore and items:

• The Roads to Darkness: A book that provides a dialogue line to placate Bernard.
• Orpheus, Prince of the Comet, Part One: Betrayal: A disc that initiates the quest to discover the history of Prince Orpheus.
• Mage's Friend: A magical ring found in a wooden chest by the bed.
• Handwritten Letter: Provides context regarding the Bulette roaming the area.

Fourth Floor (Roof)

The roof is guarded by Bernard and several Animated Armours. If you have read the books found throughout the tower, you can avoid combat by reciting the correct lines.

• Placating Bernard: If you have read "The Roads to Darkness," you can respond with "Or art though friend, a rescue from my lonely wake?" to prevent a fight.
• Rewards: Successfully interacting with Bernard can yield the "Guiding Light" ring or the "Light of Creation" weapon.
• Stool of Hill Giant Strength: Behind the Animated Armours, you will find a stool. If you destroy it, you can loot the "Club of Hill Giant Strength."

The Basement (Secret Room)

Accessed via a lever on the fourth floor or a hidden path, the basement contains the "Staff of Arcane Blessing" and "The Sparkswall" in a gilded chest, alongside various scrolls and alchemical ingredients.

Alchemy and Loot

The Arcane Tower is the only location where you can obtain "Tongue of Madness" and is a primary source for "Broken Machinery," which is used to craft the Elixir of Lightning Resistance. Always check crates and barrels, as they are rich in mushroom-based alchemical ingredients.

For more information on character progression, consider reviewing our Baldur's Gate 3 builds or checking out our detailed Baldur's Gate 3 walkthrough.

Source-aware planning notes

Location pages should help you orient without pretending that an unverified coordinate or route is exact. Use the collected descriptions to prepare a checklist, then confirm the landmark or objective in your own run. If a map or guide uses a different naming convention, keep the wording broad and flag the difference so the page remains useful across patches and platforms. Use the article's headings as a worksheet: write down the confirmed premise, the next action, and the point at which you need to verify a newer source. This approach keeps the guide useful for a first pass while making its limits visible. It also prevents a concise community summary from being mistaken for a complete rulebook. When you adapt the advice to a different party, difficulty, platform, or patch, preserve the original wording and add your own observation separately. A careful note is more valuable than a confident detail that the collected evidence cannot support.

If you are keeping a run log, record the source date, the decision you made, and whether the result matched the description. That record gives you a reproducible way to revisit this topic after an update without rewriting an unsupported claim.

FAQ

How do I stop the Arcane Turrets from attacking?

You must restore power to the generator on the ground floor using a Sussur Bloom. Alternatively, you can destroy them or block their line of sight using spells like Fog Cloud.

How do I avoid fighting Bernard?

You must read the books found throughout the tower, specifically "The Roads to Darkness." When you meet Bernard on the roof, choose the dialogue option: "Or art though friend, a rescue from my lonely wake?"

What is the purpose of the Chest of the Mundane?

The chest magically shrinks items placed inside it. You can dispel the illusion by placing a Sussur Bloom near it or by moving the items out of the chest. It contains useful items like the boots "Mystra's Grace."