Eyrie

The Eyrie is an ancient castle and seat of House Arryn, one of the oldest lines of Andal nobility, within the Vale of Arryn. It is situated in the Mountains of the Moon astride the peak known as the Giant's Lance, several thousand feet above the valley below. Although small compared to the seats of other Great Houses in Westeros, the Eyrie is considered impregnable to attack. During winter years, the Arryns seek refuge against the cold at the base of the mountain in the Gates of the Moon.

Layout
The Eyrie is the smallest of the great castles. The castle is made of fine white stone. The towers encircle a garden, which had been meant as a godswood, but no weirwood heart tree would take root in the stony soil. The garden, which is overlooked by Lady Lysa Arryn's apartments, instead contains grass, shrubbery, and statuary.

The barracks and stables are carved directly into the mountain. The granary is as large as those found in much larger castles, like Winterfell. The Eyrie also contains a sept. The waterfall known as Alyssa's Tears can be heard from the Eyrie. The castle's household guard wear sky-blue cloaks.


 * The High Hall is a long and austere hall, with walls made of blue-veined white marble. At the end of it sits the throne of the Arryns, a seat carved of weirwood. It has narrow, arched windows, between which are torches mounted on high iron or silver sconces.
 * The Moon Door is a narrow weirwood door that stands between two slender pillars in the High Hall. A crescent moon is carved into the door, which opens inward, and is barred by heavy bronze. The door opens into the sky. Most executions at the Eyrie use this door, which opens onto a six hundred foot drop to the stones of the valley below.
 * The Crescent Chamber is the Eyrie's reception hall. Here, guests are given refreshments and warmed by the fire after making the climb up the Giant's Lance.
 * A flight of steep marble stairs from the Crescent Chamber bypasses the Eyrie's undercrofts and dungeons and is protected by three murder holes. The portcullis atop the stairs leads to an arcade decorated with tapestries.
 * The solar is located at the end of the arcade. The chamber is decorated with a Myrish carpet and has enough room for a trestle table and at least eight heavy oak-and-leather chairs.
 * The Lower Hall is a hall in which food and wine can be served.
 * The Morning Hall is located above the kitchens and is where people can break their fast.
 * The Maiden's Tower is the easternmost of the seven towers of the Eyrie. From a balcony on the tower, one can see the Vale and the Giant's Lance.
 * The Moon Tower contains the bedchambers of Lord Arryn.
 * Sky cells are the Eyrie's infamous dungeons. They are shelves on the side of the mountain's sheer cliffs, left open to the cold sky, with slightly sloping floors to unnerve the prisoners. Many prisoners, driven mad by the cold and howling wind, commit suicide rather than remain imprisoned.

Defenses
To reach the Eyrie, an invading army would have to overcome the Bloody Gate guarding the high road, then overcome the Gates of the Moon located at the bottom of the Giant's Lance and climb a narrow goat trail. Under normal circumstances this would take half a day, all the while being exposed to attack from the defenders in the Eyrie and its three waycastles along the path.


 * Stone, the first waycastle. The path to it is surrounded by forest. It has a massive ironbound gate. The stone walls are crowned with iron spikes and its two fat round towers raise above the keep.
 * Snow, the second waycastle. The trail to it is steeper than that of Stone. It consists of a single fortified tower, a timber keep, and a stable placed behind a low wall of unmortared rock. It is nestled into the Giant's Lance so as to command the entire pathway from Stone to Snow.
 * Sky, the third waycastle. The path to it is treacherous. It is open to the wind and the steps are cracked and broken from the constant freezing. Sky is a high, crescent-shaped wall of unmortared stone raised against the side of the mountain. Inside the walls are a series of ramps and a great tumble of boulders and stones of all sizes, ready to throw down or even cause a minor avalanche. There is a cavern containing a long natural hall, stables, and supplies. Handholds carved into the rock lead to the Eyrie, while earthen ramps give access to the walls. The Eyrie is located six hundred feet above this point.

Kings of Mountain and Vale
Legends claim that the Winged Knight drove the First Men from the Vale and flew to the top of the Giant's Lance on a huge falcon to slay the Griffin King. Records indicate that the Andal king Artys I Arryn constructed the Gates of the Moon at the foot of the Giant's Lance, where he had defeated Robar II Royce's army of First Men in the Battle of the Seven Stars.

Artys's grandson, Roland I Arryn, believed that the Gates of the Moon was both inferior to Casterly Rock and the Hightower and strategically vulnerable to raids from the Vale mountain clans. Allegedly inspired by Teora Hunter, Roland decided to build a new royal palace high in the mountain above the Gates of the Moon.

Construction of the Eyrie took place intermittently over generations, and marble was imported from Tarth in the narrow sea, as Roland disliked the appearance of stone available in the Vale. The first maester to serve at the Eyrie was Quince. The Eyrie was inhabited as a pleasure palace for the Kings of Mountain and Vale during spring, summer, and autumn. The Arryns descend to the larger Gates of the Moon for winter and host a feast when they return to the Eyrie in the spring.

Targaryen Era
During Aegon's Conquest, Queen Regent Sharra Arryn fortified the Bloody Gate and the boy king Ronnel Arryn used the Eyrie as a refuge. Visenya Targaryen, however, flew upon Vhagar to the Eyrie's inner courtyard. Realizing that the Eyrie's location could not protect them against dragons, the Arryns submitted to House Targaryen and the new Lord of the Seven Kingdoms, Aegon I Targaryen.

Jonos Arryn usurped his brother, Lord Ronnel, and took control of the Eyrie during the reign of King Aenys I Targaryen. Once Lord Royce began hunting the rebels, Jonos threw Ronnel through the Moon Door. Prince Maegor Targaryen rode the dragon Balerion to the Eyrie, where he hanged Jonos.