The Combat Testing Center was a unique facility present on the Klingon homeworld, Qo'noS.

Within the center, new weapon technology was developed and tested for later use by the Klingon Empire. Due to its importance, the center was equipped with its own weaponry allowing it to resist any invaders that would attempt to attack it. (TNG video game: Birth of the Federation)

the planet Qo'noS
cities and settlements	An'quat • D'Takka • Emperor Kahless Military City • First City (Old Quarter) • Khal • Khinah • Kopf's Cliff • Krennla (Baldi'maj District • Kenta District) • Kri'stak City • M'riiah • Navarath • NarOs • Novat • Qam-Chee • Qa'yarin • Quin'lat • Saqwa' • Serra'nob • Szlar'it • T'chariv • Tisur • Tolar'tu • Tong Vey • Ya'Koraq
landmarks and institutions	Combat Testing Center • Du'Hurgh • Federation Embassy on Qo'noS • Flame Cliffs of Kutabi • Goqlath Castle • Great Domes of Qo'noS • Great Hall • Hall of Heroes • Hall of Honor • Kilgore Landing Bay • Klingon Defense Force Command Headquarters • Lukara Edifice • Museum of Military Triumph and Conquest • Palace of Kahless • Place of Honor • Tactical College • Taklar Temple • Temple of Molgar • Temple of Rogax • TengchaH Jav • Three Turn Bridge • TlhIng Veng laboratory • Vulcan Cuisine
nations and provinces	Ketha • Khlaru • Mekro'vak
geography	Almron Preserve • BIng'av Mountains • Caves of Kahless • Caves of No'Mat • Chak'ok • Cybriss Valley • DuHoH Desert • Fesh'rin Hills • Kutabi • Gharhuil • Hamar Mountains • HatlhHurgh • Jungles of Kintak • Kang's Summit • Kannaga Mountains • Karak Summit • Kartade Forest • Ka'Toth plains • Ketha Lowlands • Kol'Vat • Kri'stak volcano • Mount Batlhqui • Mount Vor • Nagh Be'nImey • Ona'ja'bur • Qimpo • Qo'dung Mountains • Qora Forest • Qualnagh Mountains • Shrana • Sutor Mountains • S'zlach • Tiv'ranisch • Tl'Gekh • TlhIngtuj Mountains • Tor'aq • Uhq'ra' Mountains
bodies of water	BIQ'a'bIng Ocean • BIQ'a'dung Ocean • Chu'paq Sea • Sea of Gatan • HoSghaj River • Lake Lursor • Lake Lusor • NIHbIQ'a' Ocean • PoSbIQ'a' Ocean • Qam-Chee River • Skral River