"Lord of the Eyrie" is a title associated with the character Petyr Baelish, also known as Littlefinger, in the popular fantasy series A Song of Ice and Fire by George R.R. Martin. The Eyrie is a castle located high in the mountains of the Vale of Arryn, known for its impregnable defenses and stunning views. Littlefinger becomes the Lord of the Eyrie after marrying Lysa Arryn, the widow of the previous lord. The Eyrie is notable for its unique design, featuring a sky-high perch that can only be accessed by a narrow path or a lift. This strategic location makes it a stronghold in the ongoing power struggles within the realm of Westeros. The castle plays a significant role in the political machinations and alliances that unfold throughout the series.