Archery Range

Hojo Clan Daimyo Estate

Oda Clan Daimyo Estate

Takeda Clan Daimyo Estate

Cathedral of Divine Wisdom

Enclave of the Emperor

Cistern of the First Hill

Foreign Engineering Company

Palatine School

Palace of the Sultan

Golden Horn Tower

Astronomical Clocktower

Barbican of the Sun

Saharan Trade Network

Compound of the Defender

Outpost

Defensive Building

10060s

Available for 20 civilizations

Offers extensive line of sight and detects units stealth or disguises. Can be upgraded with weaponry and fortifications. Attacks while garrisoned.

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Civilization bonuses

Byzantines

Mangonel Emplacements: Outposts and Keeps can be upgraded with Mangonel Emplacements. Stone Wall Towers come equipped with Mangonel Emplacements instead of Springalds.

Chinese

Masters of Gunpowder: Begin the game with Chemistry technology granted for free - defensive buildings use Handcannon Slits over Defensive Arrowslits.

English

Network of Castles: The alarm raises the attack speed of nearby units by +20%. Research Network of Citadels at a Keep to raise it to +30%.

Holy Roman Empire

Religious Zeal: A Relic placed in this building increases its armor by +25%, damage by +25%, weapon range by +25%, and line of sight by +20%, and generates +80 Gold per minute.
Emplacement Architecture: All emplacement technologies are -20% cheaper. Outpost sight range increased by +20%.

Macedonian Dynasty

Mangonel Emplacements: Outposts and Keeps can be upgraded with Mangonel Emplacements. Stone Wall Towers come equipped with Mangonel Emplacements instead of Springalds.

Order of the Dragon

Religious Zeal: A Relic placed in this building increases its armor by +25%, damage by +25%, weapon range by +25%, and line of sight by +20%, and generates +80 Gold per minute.
Emplacement Architecture: All emplacement technologies are -20% cheaper. Outpost sight range increased by +20%.

Upgrades

Blacksmith

Ranged Damage Technology

Increase the ranged damage of all arrows, bolts, and emplacements by +1.

Elzbach Palace

Slate and Stone Construction

Age 3

Reinforced Defenses

Age 4

Slate and Stone Construction: All buildings gain +5 fire armor.

Reinforced Defenses: Increase the health of walls, towers, and gates by +25%.

Keep

Springald Emplacement

Madrasa

Court Architects: Patronage of the finest builders increases all building health by +30%.

Incendiary Arrows: Flammable munitions grant non-gunpowder ranged units a siege arrow or bolt when attacking buildings and increase their damage by +20%.

Monastery

Devoutness

Age 3

Devoutness: Inspired Villagers gather resources +5% faster and construct buildings and defenses +25% quicker.

Outpost

Add defensive arrowslits to this structure and increase garrison arrow range by +1. Only one weapon emplacement can be added.

Ovoo

Pax Mongolica

Age 4

Pax Mongolica: Add +300 health and +3 fire armor to all Outposts.

Shinto Shrine

Gion Festival

Age 4

Gion Festival: Increases the Line of Sight of all buildings by +2 tiles. Every 3 minutes, all economic units heal for 100% of their health over 3 seconds.

Varangian Arsenal

Ranged Technology

Sharpening Stones (1/6)

Age 2 · 1/6

Sharpening Stones (2/6)

Age 2 · 2/6

Springald Emplacement: Add a defensive springald emplacement to this structure.

Cannon Emplacement: Add a defensive cannon emplacement to this structure.

Extra Materials: Towers and Keeps repair nearby walls and gates for +25 health per second.

Slow-Burning Defenses: Increase the fire armor of Stone Wall Towers, Keeps, and Outposts by +10.