index city 17
[Link] Half-Life 2's Citadel is 3 times taller than everyone thought, says guy who spent 9 years thinking about it
Read: 2/7/2021 www.pcgamer.com
When visiting City 17, don't forget to check out the Citadel. You can't miss it: it's a massive black alien structure in the center of the city, looming over the remnants of the human race with Dr. Breen's cozy office occupying the top floor.