Hyrule Field

Hyrule field is a large, grassy area that composes most of Hyrule (at least the area Link can travel through) in many of the The Legend of Zelda games, including Ocarina of Time and Twilight Princess. In Majora's Mask, there is a parallel version of Hyrule Field, called Termina Field.

Ocarina of Time
In Ocarina of Time, Hyrule Field is a large round area that acts the "hub" or crossroads of Hyrule. All other areas of the game branch out from this region. A grassy field with rolling hills and small fences, it is quite large for an N64 game. However, there is little activity, and besides a few side-quests, it serves little purpose other than maintaining the illusion of a vast land.

Lon-Lon Ranch is the only area completely surrounded of Hyrule Field. All other areas rest on its its outskirts. Accessible areas from Hyrule Field include:
 * Kokiri Forest in the Southeast
 * Lake Hylia in the Southwest
 * Gerudo Valley in the West
 * Hyrule Castle Town in the North
 * Kakariko Village in the Northeast
 * Zora's River in the East

At night, Stalchildren burrow out of the ground on Hyrule Field and attack Link. Peahats can be found in the Southern areas. As Adult Link, Big Poes roam the field as well.

Twilight Princess
In Twilight Princess, Hyrule Field is almost five times larger than in Ocarina of Time and spans three Provinces: Lanayru, Eldin and Faron. It sports a great deal more landscape variety than its previous incarnation, including bridges, rocky cliffs, woods, and ancient ruins. Instead of being a hub, Hyrule Field surrounds Hyrule Castle, and is full of shortcuts and entrances to many other areas:
 * Faron Woods in the Southernmost part
 * Kakariko Village in the East
 * Zora's Domain in the North
 * Lake Hylia in the West
 * Hyrule Castle Town in the very center

(NOTE: the Wii version of the game is mirrored, therefore East is West and West is East for the Wii)

The changes also include a wider variety of enemies roaming the field, including Bokoblins, Bulbins, Deku Babas, Bomskits, Guays, Helmasaurs, Leevers, Poes, Stalhounds (at night), and Tektites.