- "Help me... I am in the dungeon of the castle. I know there is a hidden path from outside of the castle to the garden inside."
- — Princess Zelda
Link must use a hidden underground passage located to the east of the outer castle walls of Hyrule Castle to reach Hyrule Castle Garden. By way of the heavily guarded garden, Link is able to sneak into the castle proper, wherein Princess Zelda is held prisoner.
Hyrule Castle Garden is found within the walls of Hyrule Castle, and is often under heavy guard by Vassals in service to King Daltus. It contains the Minish Door that opens the way to the Elemental Sanctuary every hundred years, perceivable only to Hylian children and the Minish themselves. The Dojo of Grimblade, from whom Link learns the Sword Beam technique, is also found here. Two passageways that hide treasures and a Golden Rope appear in the garden if Link fuses Kinstones with certain characters.
At the beginning of the game, Hyrule Castle Garden is the location of the ceremony honoring Vaati, winner of the sword-fighting tournament held during the Picori Festival. However, as the honor of touching the Picori Blade is bestowed upon him, he reveals himself to be of evil intent, and breaks it, unleashing the evils which it had sealed away inside the Bound Chest, in hopes of retrieving the powerful Light Force. Furthermore, he turns Princess Zelda to stone, which serves as the impetus of Link's quest. Later on in the game, Link has to sneak his way through the heavily guarded garden in order to reach the Elemental Sanctuary, where he must go to infuse the White Sword with the Elements he has retrieved.
Interestingly, the passage used to sneak into Hyrule Castle plays the same music as the Secret Passage from A Link to the Past, suggesting they could be one of same.
| Ezlo · King Daltus · Link · Princess Zelda · Smith · Vaati|
—Full list of characters
|Big Green ChuChu · Gleerok · Mazaal · Big Octorok · Gyorg Pair · Vaati Reborn · Vaati Transfigured · Vaati's Wrath|
| Castor Wilds · Cloud Tops · Eastern Hills · Hyrule Town · Lake Hylia · Lon Lon Ranch · Minish Woods · Mount Crenel · Mt. Crenel's Base · North Hyrule Field · Royal Valley · South Hyrule Field · Trilby Highlands · Veil Falls · Western Wood · Wind Ruins|
|Deepwood Shrine · Cave of Flames · Fortress of Winds · Temple of Droplets · Royal Crypt · Palace of Winds · Dark Hyrule Castle|
|Smith's Sword · White Sword · Four Sword · Small Shield · Mirror Shield · Bombs · Boomerang · Bow · Cane of Pacci · Gust Jar|
|Bottle · Flame Lantern · Flippers · Grip Ring · Mole Mitts · Ocarina of Wind · Power Bracelets · Roc's Cape|
|Elements · Kinstones · Tiger Scrolls|
|Deku · Fairy · Goron · Human · Hylian · Minish · Wind Tribe|