WoW Warlords of Draenor: Buildings (medium)

Barn - allows you to capture creatures in Draenor and "process" them into leather, meat and such.

Tier one - Allows you to capture creatures, such as wolf, clefthoof, elekk and talbuk. Thanks to them, you obtain leather and fur. It is especially useful for the players that engage themselves into leatherworking and Tailoring.

Tier two - It allows you to capture and process boars and riverbeasts. Thanks to the meat that you obtain from them, you can cook the best food in the game.

Tier three - allows you to capture elite creatures that you can then process into Savage blood, used to craft powerful weapons and armor.

To upgrade the barn to tier 3, you need to buy appropriate blueprints that becomes available only after you obtain the Master Trapper achievement, i.e. after you process 125 creatures.

Lunarfall Inn / Frostwolf Tavern - hanks to this building, you can complete tens of new quests and recruit new allies.

Tier one - Each day, in your tavern, there appears one of the heroes of the World of Draenor and offer you a special quest.

Tier two - Each week, you can pick one ally for your garrison, from among three offered to you. It is worth adding that you will be able to pick one feature that your new ally should have.

Tier three - You gain access to highly profitable Treasure Hunter missions.

To be able to upgrade the inn to tier three, you need to unlock the Stay Awhile and Listen achievement, i.e. complete 20 quests tasked to you by the inn guests.

Lumber Mill - Thanks to the mill, you are able to chop down trees and obtain supplies for your garrison faster. After you chop down trees, you obtain Timber, which you can then exchange for supplies. You can order the exchange in the mill. The possible exchange orders to be performed at any given moment is 7, for tier 1.

Tier one - Allows you to chop down small trees.

Tier two - Allows you to chop down medium trees

Tier three - Allows you to chop down big trees.

You can upgrade the lumbering mill to tier 3 only if you buy special plans. They are available only after you obtain the Upgrading the Mill achievement, i.e. after you order 75 exchanges of timber for supplies for your garrison and complete several quests connected with the mill.

Gladiator's Sanctum - This building provides you with several abilities that become useful, while you are exploring the world and during combat. The most important, however, is the option to unlock a series of achievements to obtain and new quests.

Tier one - Speeds up health regeneration in open zones and allows you to collect bones from defeated opponents (this is true for the PvP duels), which are used to obtain one of the achievements.

Tier two - Unlocks Nemesis quests, and decreases damage taken from falls from heights. Also, it allows you to breathe underwater.

Tier three - Provides you with access to tournaments in Highmaul Coliseum and, if your health drops below 35%, it reduces damage taken by a half.

You can upgrade the Sanctum to tier 3 after you obtain The Bone Collector achievement, i.e. after you collect the bones of 4000 defeated opponents.

Trading Post - Thanks to this building, you can conduct trade with the factions of Dreanor. You can buy, e.g. crafting materials and other goods. Unfortunately, for your purchases, you pay with the supplies needed for garrison expansion.

Tier one - Allows you to exchange supplies for meat, plants and other basic items.

Tier two - At the Trading Post, you can access auction house and conduct trade with one additional faction.

Tier three - You receive 20% reputation more. It is effective on all characters on the same account.

To obtain plans for tier 3, you need to obtain the Savage Friends achievement, i.e. obtain high level of reputation with, at least, 3 factions of Draenor.