Highgarden is the seat of House Tyrell, regional capital of the Reach and the heart of chivalry in the Seven Kingdoms. It lies on the Mander and is where the Ocean Road meets the Roseroad, making it an important crossroads.
The tiered-walled castle has groves and fountains, shady courtyards, and marble colonnades. It is filled with singers, pipers, fiddlers and harpers. The stables have a fine selection of horseflesh, and there are pleasure boats to sail along the Mander. Between the outer and middle walls is a famous briar labyrinth. The oldest towers are square and date from the Age of Heroes, while newer towers are taller and round.
There are fields of golden roses that stretch as far as the eye can see. Fruits grown nearby include melons, peaches, and fireplums.
Highgarden's sept is matched only by the Great Sept of Baelor and the Starry Sept. The castle godswood contains three weirwoods known as the Three Singers.
Osmund Tyrell is the Lord Seneschal.
Maester Elyas serves the Lord of Highgarden.
Paxter and Leona are the septon and septa.
Ser Igon Vyrwel is Captain of the Guard.
Ser Kennos Roxton is master-at-arms and the Lord's Justice.
Ser Hosman Norcross is the commanding marshal.
Highgarden was threatened by King Euron Greyjoy during the War of the Five Kings, with many fearing he would sail up the Mander to attack the stronghold. Following the Siege of King's Landing, Mace Tyrell and his army returned to face the Ironborn, though Mace would spend the rest of that campaign in Highgarden.