◬ Culper Lodge
- Cost: Free
- Yield: Covert agents become special agents
- Prerequisite: None
Watch your quests in the late game. Eventually, you'll get a chance to earn the Culper Lodge. When this occurs, you get to have all of your spies become special agents instead of having to work their way up through the ranks.
◬ Headquarters
- Cost: Free
- Yield: +1 Culture, Defense +6, +4 Energy, +2 Science, +3 Production
- Prerequisite: None
The capital city for your nation gets this national wonder automatically, which makes that city much more productive. Note that your capital is the city that must be connected with others via water or roads for economic bonuses to occur, so connect everything to your capital as soon as possible.
If you lose your capital during a war, the Headquarters are moved to a new city. They'll return to the old capital if you ever retake it.
◬ Spy Agency
- Cost: 200 Production
- Yield: Gain 3 spies
- Prerequisite: Computing (Tech)
Build this as soon as you learn Computing. When it completes, you are given your first three spies and can start launching covert operations!