Urðrót, the World Tree

The Ascendant Realm of Hrissgamondr, the Mountain That Mocks Fate. The birthplace of all of Edras' giants, Urðrót exists as a planet-sized ash tree from which hang the nine spheres. This realm consists of a wide range of geographic features - each distinct to the sphere they reside within - glaciers, snow-capped mountains, volcanoes, and desolate plains. Almost all of the spheres display extremes of both weather and atmosphere. Much of the landscape is dotted with menhirs and forests of towering pine and oak trees. Urðrót orbits Edras once every 90 years.

The Spheres

Fimbulwinter: Home of the Frost Giants. Fimbulwinter is described as a wide tundra illuminated by sparkling icefalls. It is said to be mountainous, but still filled with snow, ice, frost, and glaciers. Atop its largest glacier can be found Nyfholl, a stronghold and festhall carved from the glacier itself.
The Steading: Home of the Hill Giants and Cyclopes. This sphere consists of infinite brown hills that are chaotically aligned around the center steading, the namesake of the lands. A single story longhouse - in giant size - but strangely consisting of miles upon miles of interconnected wooden rooms. Between these hills is grassland stretching as far as the eye can see and on the hills themselves there are forts inhabited by hill giants.
Woodhaven: Home of the Wood Giants. It is a large, peaceful sphere full of gardens and crystal springs. Within the heart of the massive oak forest at its center can be found collections of great longhouses.
Thraotor: Home to the Storm Giants and Cloud Giants. The sphere consists almost entirely of a single, massive thunderhead cloud that roams across the sphere, spreading violent storms in its wake. The only land that exists within Thraotor are the few mountain peaks that pierce the clouds, though they have no slopes and no bottoms, instead disappearing into fog as one descends their cliffs. Within the cloud is Stormhold, a mighty palace of marble adorned with gold, platinum, and gemstones rising up from within the plumes.
Muspelheim: Home of the Fire Giants. A jagged land of fire and volcanic rock, formed by inverted earthbergs that float through the sphere amongst and infinite sea of magma and flame. As a result of it being so inhospitable towards life, Muspelheim is a desolate place that is only favored by its resident fire giants.
Nidavellir: Home to the Stone Giants and Fomorians. The entirety of the sphere is underground. Its tunnels, chambers, and caverns are kept warm by hot springs and geysers, which provide ample heat to sustain the native vegetation, which consists of woods that required no sunlight to grow.
Niflheim: Home to the Tomb Giants. Niflheim consists mostly of forestland with bluffs that jut out and then quickly fall away. Put simply, the sphere looks like a gray version of a forestland on Edras. The air is cool, giving rise to a strange fog that blankets the land.
Shatterstone: Home to the Ogres, Trolls, and Ettins. It is an immeasurable plain, surrounded by dense forests, broiling deserts, flinty badlands, murky rivers and foreboding seas - all bearing the ravages of constant war. It is contested over nightly by inhabitants who heal quickly and even regenerate lost limbs.