Golden Hills

Golden Hills was a Celestial plane in the World Tree cosmology model, and home to most of the gnome pantheon. During the Spellplague, it was set adrift in the Astral Sea and eventually merged with Arvandor. Before becoming its own plane, Golden Hills was a region in the Dothion half of Twin Paradises/Bytopia, according to the Great Wheel cosmology model.

The World Tree Cosmology
In the World Tree cosmology, the Golden Hills was a mildly good-aligned celestial plane connected to the trunk of the World Tree, and through it to the rest of the celestial planes. It was home to the Lords of the Golden Hills, the gnome pantheon. The realm itself consisted of seven rolling hills, one for each of the deities who made the plane their home. Urdlen, the eighth member of the gnomish pantheon, meanwhile, tunneled beneath the Duergar realm of Hammergrim.

Whisperleaf
Baervan Wildwanderer's realm was known as Whisperleaf. The name was taken from the oak atop the hill, from which Baervan cut his spear of the same name. A cottage sat beside the tree, which, despite its small appearance, was large enough to hold all his petitioners.

The Hidden Knoll
Baravar Cloakshadow's realm was known as the Hidden Knoll. It was full of tricks and non-lethal traps.

The Deep
Callarduran Smoothhands's realm was known as the Deep. Caverns extended far below the hill, which was the smallest on the surface.

The Mithral Forge
Flandal Steelskin's realm is known as the Mithral Forge. The forge beneath this hill was fueled by a portal to the Elemental Plane of Fire. Flandal also maintained a portal to Gond's realm in the House of Knowledge.

Stronghaven
Gaerdal Ironhand's realm was known as Stronghaven. The fortress was the first line of defense for the plane.

Glitterhome
Garl Glittergold's realm is known as Glitterhome. It was the largest of the seven hills, although Garl preferred to spend his time wandering the plane in his role as Watchful Protector.

The Gemstone Burrow
Segojan Earthcaller's realm was known as the Gemstone Burrow. It was home to many burrowing animals as well as gnomes.