Korth is the capital and the largest city of Karrnath. Nestled between the Karrn River to the north and the Nightwood to the east, Korth has been Karrnath's capital since before the empire of Galifar.
The city is currently ruled by Karrnath's King Kaius III from his palace of Crownhome, although he leaves the day-to-day management of the city to his Civic Minister Hyran ir'Tennet, and the management of the city's garrison, the White Lions, to General Thaurum.
Korth's history dates back to pre-Galifaran times when it was the capital of the independent kingdom of Karrnath. Under Galifar I's rule, Korth saw significant expansion in the middle of his reign, and his restrictions on the dragonmarked houses—the Korth Edicts—were established from meetings with House members in the city.
During the Last War, Korth was besieged on three separate occasions, by Cyre in 936 YK, Aundair from 939 YK to 940 YK, and by Cyre again from 971 YK to 973 YK, but it never fell to its besiegers. However, while it never fell, large sections of the city were destroyed or damaged during the sieges, and since the Treaty of Thronehold, the city is being rebuilt in a more orderly uniform plan. The most notable structure of this rebuilding effort is the large Cathedral to the Sovereign Host.
The city is divided up into five wards: Highcourt, Temple, Commerce, Community, and the Low District, separated by the riverside bluffs. The city has a lightning rail station, and a harbor along the Karrn River.
Each of Korth's five wards contains markets, housing, and other elements of a flourishing city, though each ward has its own particular function.
- Highcourt Ward is where much of Karrnath's government operates, including the royal palace of Crownhome. It is also home to many of Karrnath's prominent noble families.
- The Temple Ward features many shrines and cathedrals to Eberron's religions.
- The Commerce Ward is where much of Korth's business takes place, including the dragonmarked house enclaves.
- The Community Ward is primarily middle-class housing.
- The Low District is primarily housing for the poorer citizens of Korth.
The following are notable places within Korth:
- The Gates: There are four main gates leading into Korth, each manned by White Lions, Korth's local military garrison that serves as the city watch. Westgate is the terminus of the road from Rekkenmark, while Northgate is the terminus of the lightning rail. Eastgate is the terminus of the road from Karrlakton, while the Rivergate is actually a customs house on the dock. Two other gates, Southgate and Holygate, also exist, but they are normally closed for use. Southgate is located near Crownhome, and is only occasionally used for ceremonial parades. Holygate in the northeast was magically fused shut to defend against Cyre when the city was besieged in 973, and has yet to be reopened.
- Crownhome: Kaius III's fortress palace of Crownhome sits on King's Hill in the Highcourt Ward of Korth. It houses thousands of soldiers and magical siege weaponry as well as the royal family.
- Tower of the Twelve
- Cathedral to the Sovereign Host: This cathedral was constructed after the Treaty of Thronehold was signed.
- Korth Enclave for Cannith East
Notable Residents of Korth include:
- King Kaius ir'Wynarn III
- Queen Etrigani
- Prelate Alinda Roerith
- The Midwife
- General Yorin Thauram
- Civic Minister Hyran ir'Tennet
- Zorlan d'Cannith
- Keith Baker, Bill Slavicsek, & James Wyatt (2004). Eberron Campaign Setting. (Wizards of the Coast), p. 181. ISBN 0-7869-3274-0.
- Bill Slavicsek, David Noonan, and Christopher Perkins (2005). Five Nations. (Wizards of the Coast), p. 109. ISBN 0-7869-3690-8.
- Bill Slavicsek, David Noonan, and Christopher Perkins (2005). Five Nations. (Wizards of the Coast), p. 110. ISBN 0-7869-3690-8.
- Keith Baker, Ari Marmell, Michelle Lyons and C.A. Suleiman (2006). Dragonmarked. (Wizards of the Coast), pp. 9–10. ISBN 0-7869-3933-8.
- Bill Slavicsek, David Noonan, and Christopher Perkins (2005). Five Nations. (Wizards of the Coast), p. 88. ISBN 0-7869-3690-8.
- Bill Slavicsek, David Noonan, and Christopher Perkins (2005). Five Nations. (Wizards of the Coast), p. 111. ISBN 0-7869-3690-8.
- Bill Slavicsek, David Noonan, and Christopher Perkins (2005). Five Nations. (Wizards of the Coast), pp. 112–113. ISBN 0-7869-3690-8.
- Keith Baker, Jeremy Crawford, & James Wyatt (2019). Eberron: Rising from the Last War. (Wizards of the Coast), p. 45. ISBN 0786966890.
- Keith Baker, Bill Slavicsek, & James Wyatt (2004). Eberron Campaign Setting. (Wizards of the Coast), p. 179. ISBN 0-7869-3274-0.