The massive space station serves as the capital of the Citadel Council and the hub of galactic civilization.
Council Chambers
Presidium
Wards
C-Sec Academy
Pop: 13.2 million
Security: C-Sec
Political, Economic, Cultural Center Homeworld of the asari and the most advanced civilization in the known galaxy.
Ancient Temples
Research Centers
Biotic Academies
Crystal Spires
Pop: 5.5 billion
Security: Asari Military
Asari Homeworld, Cultural Center Homeworld of the turians, known for its strong military presence and strategic importance.
Military Bases
Defense Grid
Training Facilities
Government Centers
Pop: 6.1 billion
Security: Turian Military
Turian Homeworld, Military Hub Homeworld of the salarians, characterized by its advanced research facilities and technological developments.
Research Labs
Tech Centers
STG Facilities
Universities
Pop: 3.2 billion
Security: Salarian Union
Salarian Homeworld, Research Hub The irradiated and hostile homeworld of the krogan, bearing the scars of nuclear war.
Ancient Ruins
Clan Grounds
Sacred Sites
Radiation Zones
Pop: 2.1 billion
Security: Clan Forces
Krogan Homeworld, Historical Site A lawless space station in the Terminus Systems, known as a haven for criminals and mercenaries.
Afterlife Club
Slums
Markets
Mining Operations
Pop: 7.8 million
Security: Mercenary Groups
Criminal Hub, Strategic Location A corporate world known for its luxury, trading, and legally questionable business practices.
Trading Floor
Corporate Towers
Luxury Districts
Spaceports
Pop: 85 million
Security: Corporate Security
Trade Hub, Corporate Center The quarian homeworld, contested between its original inhabitants and the geth.
Ancient Cities
Geth Structures
Arid Landscapes
Clean Environment
Pop: Disputed
Security: Geth/Quarian Forces
Quarian Homeworld, Geth Hub A corporate world known for its controversial private research labs and extreme weather conditions.
Research Labs
Corporate Offices
Port Hanshan
Peak 15
Pop: 400,000
Security: ERCS
Research Hub, Corporate Haven A human colony built on ancient Prothean ruins, known for its massive skyscrapers and historical significance.
Prothean Ruins
ExoGeni Facility
Skyway
Zhu's Hope
Pop: 300,000
Security: Colonial Militia
Archaeological Site, Human Colony A pristine human colony world and agricultural center, site of the first Reaper attack on humanity.
Agricultural Centers
Research Outposts
Prothean Ruins
Defense Towers
Pop: 3.7 million
Security: Alliance Military
Human Colony, Historical Site Known as the 'human Illium,' Bekenstein is a wealthy human colony and cultural center.
Luxury Districts
Financial Centers
Entertainment Venues
Mansions
Pop: 5.4 million
Security: Private Security
Economic Hub, Cultural Center The ocean world home to both the hanar and the drell, known for its vast underwater cities.
Underwater Cities
Surface Domes
Prothean Ruins
Environmental Shields
Pop: 1.8 billion
Security: Illuminated Primacy
Hanar Homeworld, Drell Refuge 