Capital: Lannisport
Notes: A wealthy harbor city, the economic and trade hub of the West, overshadowing even Casterly Rock as a political seat under Imperial reorganization.

Capital: Oldtown
Notes: Largest city of the Reach, and now a provincial capital. It also houses the Imperial University of Jaehaerys, making it the intellectual center of the realm.

Capital: Sunspear
Notes: Since Dorne lacks a major trade city, the capital is the Martell seat itself. The palace-fortress functions both as provincial and dynastic center.

Capital: The Weeping Town
Notes: Chosen due to its central location and larger size compared to Storm’s End, which remains dynastic. The Weeping Town has grown into the administrative hub of the Stormlands.

Capital: Aegon’s Landing
Notes: Once King’s Landing, now renamed. It serves as both the capital of the Western Realm and headquarters of the Crownland’s governor.

Capital: Maidenpool
Notes: A coastal port city rebuilt under Imperial order. With Harrenhal given to Stannis Baratheon as a princely seat, Maidenpool became the provincial capital.

Capital: White Harbor
Notes: Largest city in the North, chosen as capital for its trade importance and accessibility. Winterfell remains the dynastic heart of the Starks, but not the administrative capital.

Capital: Lordsport
Notes: The primary harbor of the Iron Islands, chosen as the new capital for governance and trade purposes, replacing Pyke’s purely dynastic seat.

Capital: Bloodstone
Notes: Stronghold of House Assarion, and historically the seat of kingship in the Stepstones. Bloodstone now functions as both dynastic and provincial center.

Capital: Hardhome
Notes: Chosen as the provincial capital after resettlement. It represents the Free Folk integration into the Empire, governed by Mance Rayder under Imperial authority.

Capital: Gulltown
Notes: The largest port of the Vale and its most practical administrative hub, eclipsing the Eyrie as a center of provincial rule.

Realm Note

These capitals are chosen not merely for dynastic importance but for administrative utility, trade capacity, and geographic accessibility.
Dynastic seats like Winterfell, Storm’s End, the Eyrie, and Casterly Rock remain symbolic family strongholds, but are not used for provincial governance under the Imperial system.

Capitals of the Provinces in the Empire of Westeros and Western Essos

Province of the Westerland – Lannisport
The wealthy port city, seat of commerce and administration in the West.
Province of the Reach – Oldtown
Largest city of the Reach, home to the Imperial University of Jaehaerys, cultural and intellectual hub.
Province of Dorne – Sunspear
The Martell stronghold, serving as both dynastic and provincial capital.
Province of the Stormlands – The Weeping Town
Centralized and accessible, chosen as administrative hub over Storm’s End.
Province of the Crownlands – Aegon’s Landing
Formerly King’s Landing; now capital of the Western Realm as well as provincial seat.
Province of the Riverlands – Maidenpool
Rebuilt under Imperial order; Harrenhal remains a princely seat, not the provincial center.
Province of Starkland – White Harbor
Largest city of the Starklands, seat of trade and administration.
Province of the Iron Islands – Lordsport
The Isles’ main harbor, replacing Pyke for provincial rule.
Province of the Stepstones – Bloodstone
Stronghold of House Assarion, historic seat of power in the isles.
Province of the North (Beyond the Wall lands) – Hardhome
New provincial center of the Free Folk, resettled under Mance Rayder’s governorship.
Province of the Vale – Gulltown
The Vale’s largest port and most practical administrative hub.