Hyrule
Hyrule is a fictional kingdom in The Legend of Zelda series where many of the games are set. It featured first in The Legend Of Zelda, and will be a main part of the overworld in Skyward Sword.
History
Hyrule is found in almost every Zelda game, with the exception of a few. It is in The Legend of Zelda, Zelda II: The Adventure of Link, A Link to the Past, Ocarina of Time, Four Swords, Four Swords Adventures, Wind Waker, Minish Cap, Twilight Princess, Spirit Tracks, and Skyward Sword.
Zelda
Hyrule in The Legend of Zelda is huge but empty. The only people you can find here are old men in caves and monsters. It is mostly made of mountains surrounding a forest area, and a graveyard to the West. Caves lead to shops, inhabited by people, or dungeons.
Zelda II
The Adventure of Link's Hyrule is similar to the original Zelda, but it now has towns and people other than old men. It still has many monsters, caves, and dungeons.
A Link to the Past
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Ocarina of Time
Ocarina of Time's Hyrule is very different from the previous 3. Castle Town and Hyrule Castle are both located in the north, populated by Hylians. Lon Lon Ranch and Hyrule Field are in the center, Hyrule Field being infested by monsters during the night. Death Mountain, Zora's Domain,Kokiri Forest, and 6 dungeons are all located in the east side of Hyrule, populated by Gorons, Zoras, and Kokiri. The South part of Hyrule is Lake Hylia and the Water Temple. The West side of Hyrule is the Gerudo Dessert, infested by monsters and populated by Gerudos, along with the Spirit Temple.
Four Swords
In Four Swords, Hyrule has only 5 areas (7 in the anniversary edition): Chambers of Insight, Sea of Trees, Talus Cave, Death Mountain, and Vaati's Palace (the anniversary edition includes Realm of Memories and Hero's Trial).
Four Swords Adventures
In Four Swords Adventures, Hyrule is divided by levels like Four Swords, but it has more.
The Wind Waker
The Hyrule in Wind Waker is flooded and their residents have moved to the mountains, now island. The only dry area is Hyrule Castle, protected by the gods. The only thing in there are monsters and the Master Sword.
Minish Cap
Minish Cap's hyrule is divided into small sections. Hyrule Town and Hyrule Castle are in the center. Minish Woods, Lake Hylia, and Cloud Tops are in the east. Mt. Crenel and Castor Wilds are in the west.
Twilight Princess
Twilight Princess has probably the biggest Hyrule so far. It is divided into 4 provinces and some extra land. Ordona Province and Faron Province are located in the south. Eldin Province is located to the west. Lanayru Porvince is in the center of the whole kingdom and Castle Town & Hyrule Castle are both located here. Gerudo Dessert and Snowpeak Mountains are in the east side.
Spirit Tracks
Spirit Tracks has an interesting Hyrule and an interesting way to travel. It's divided into 5 sections and Link needs to get everywhere by train! The areas are: the Forest Realm (Southwest), the Snow Realm (Northwest), the Ocean Realm (Southeast), the Fire Realm (Northeast), and the Sand Realm between the Ocean and the Fire Realms. The tracks to these areas must be restored in the Tower of Spirits right in the center of it all.
Skyward Sword
Skyward Sword's Hyrule is just reffered as the land below. The known areas are the Sealed Grounds, Faron Woods, Lake Floria, Eldin Volcano, and a dessert.