D'Sivas was noted as the great city state on the planet Romulus.

It was noted that more visitors come to D'Sivas than any other state in the home system. Typically, these individuals come on official business to the government officers or audiences with the Emperor of the Romulan Star Empire himself. It was considered the heart and the brain of the people.

In the city exists a statue of L'Deus where he holds the D'Vatta in one hand while pointing to the stars with an inscription of his words that he shouted to the assembly before he departed into the night. Other highlights in the city include the Arena of Life and the Bay of Salvation. (FASA RPG module: The Romulans)

The FASA material states that D'Sivas is in fact the capital of the Romulan Star Empire, however, Ki Baratan is known to be heart of the Empire in the novels.
the planet Romulus
cities and settlements Avra TrelBareldak TrelCalanistaCaranamCh'erenChaladraDinallaDorvekD'SivasEast UmrikaGavros TrelHlarekIhhlaieI'RamnauKanassarumKar'MaelKi Baratan (Government Quarter) • Krocton SegmentKromtal TrelLeinarrhM'NarthPortoraRategRa'tleihfiRhehiv'jeTal K'shirTephrenTorvenVela'SetoraVillera'trel Romulan emblem image.
landmarks and institutions Aekhhwi'rhoiAlavhet Public LibraryArena of LifeAstrophysical AcademyAvenue of ProcessionsBoulevard of HeroesCitadel Var'TheldunColleges of the Great ArtCor'Lavet ParkErehani WayHall of ColumnsHall of StateImperial Academy of ArtsIra'sihaerIrniltKi Baratan Medical CenterN'emoth DistrictOrventis ArenaPraetor's BalconyPrimedianImperial PalaceSquare of HeroesStronghold OrtikantPlaza of the Endless SkyAvenue RenakVia ColiusVia ChulaVictory SquareVikr'l Prison
nations and provinces Elheu DistrictKihaiLLunihNn'verianTikalVenat'atrix Territory
geography Allerash MountainsAr'hael DesertBeld'Rath PeninsulaCave of WindsFirefalls of Gal'GathongH'aareld va Groth'ChokHallowsJeweled Forest of Ath'reshaarKae'raktar MountainsKor ThonLandrosh MountainsPlains of AihaiRaas'trek MountainsSen'lanark MountainsT'aresh MountainsValley of ChulaValley of FireWall of Fire Mountains
continents and landmasses Brel'KarDektenbEhrie'fvilMasfarikNovokUmrikaSath'har ArchipelagoUulma IslandsUmrikaValkarja
bodies of water Apnex SeaBalsanra RiverBareldak BayD'Gansar RiverDorvek RiverGarenah SeaGend'eroth RiverHaverelar SeaH'relgath RiverJendraax StraitSea of LerodanNelrek OceanNorth Mendlanar SeaSherdak SeaSouth Mendlanar SeaTai'eld RiverTerelex StraitsThal'Tharin RiverTor'ren RiverSea of VrekessWhite Sea
flora and fauna y'gora tree
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