Cloud Tops

The Cloud Tops are located in the northeastern quadrant of Hyrule in, above Veil Falls. They can only be accessed by the native Wind Tribe and "surface dwellers with pure heart". The Cloud Tops surround the home of the Wind Tribe, who reside within the Tower of Winds.

History
In The Force Era, the sky is inhabited by a group called the Wind Tribe. After living along with the Wind for ages, the tribe eventually gained mastery over it and abandoned the Wind Ruins for the skies taking their palace and element, the Wind Element, with them.

While in search of the Wind Element, Link scours the Fortress of Winds, where he learns of the Wind Tribe's departure. Later in his search, the young hero finds that he must use the tornado nearby Veil Spring to access the Element. To reach the tornado, the young hero must ascend Veil Falls and jump into the vortex. After finding his way to the Cloud Tops, a member of the Wind Tribe expresses their surprise that someone else than one of the Wind Tribe could walk on the clouds, as only those with pure hearts may walk on the clouds. Link learns from the members of the Wind Tribe in the Tower of Winds that the Element he's seeking is inside the Palace of Winds, which is guarded by the Wind Tribe. Although the Wind Tribe has protected the Wind Element for ages, monsters has taken root inside, and the Gyorg Pair have taken hold of the Wind Element. Once Link defeats them, he obtains the Wind Element and returns to Melari's Mine to have the legendary Picori Blade fully restored.

Navigating the Cloud Tops
The Cloud Tops are accessed by climbing all the way to the top of Veil Falls and jumping into a wind vortex, launching Link into the sky. Upon landing on a cloud, two members of the Wind Tribe, Gale and her sister, Hailey, are seen attempting to reach the Tower of Winds. Link must traverse the clouds seeking Golden Kinstones, which must be fused with five Mysterious Clouds to activate five small pinwheels located at the center of the Cloud Tops. When all five of these pinwheels are rotating, they create a vortex, which flings Link to the Palace of Winds.

In this region, there are clusters of hard clouds that require the Mole Mitts to destroy, an item that is used frequently throughout the Cloud Tops. Link must use the many smaller tornadoes in the area to float to other cloud masses in the Cloud Tops region that are too far away to access through jumping.

Theory
The Cloud Tops may be related to Skyloft, and the clouds themselves may be the remnants of the Cloud Barrier erected by Hylia.

Trivia

 * The music heard in the Cloud Tops is a mixture of a remix of the first Legend of Zelda's overworld theme, and the title screen music.