建筑

维多利亚2中的建筑有三种类型。海军基地和要塞只能由政府建造，而一个国家的经济政策决定了资本家还是政府可以建造铁路。

建筑物是在各个省份建造的（不像工厂是在地区一级建造的）。对于要塞和铁路来说，一个国家可以拥有多少建筑的唯一限制就是省份的数量。同样，游戏中的一个省份可以同时拥有所有可用的建筑。不过每个地区只能有一个海军基地。

堡垒

Forts are defensive structures that provide a variety of benefits.

Default cost per level(this is increased if the national administrative efficiency is less than 100%):

100 lumber
100 cement
50 explosives
50 small arms
40 artillery

Benefits:

Each level of a fort increases the time to occupy a province by roughly 75%. This means a Level 3 fort increases the occupation time by 225% and so forth.
Forts provide a bonus to the defender's military tactics in battle, though only to the owner. The bonus for a Level 1 fort is 10%, shown in comparison to 100% tactics/level. The bonus can be observed by hovering the mouse over the flags in the combat window, along with the number of techs and tactics bonus.
Armies in enemy territory adjacent to an enemy fort show +2% attrition modifier for presence of nearby fort.
Level 1 fort increases colonial range by 100.

海军基地

Naval bases are buildings that allow country to build a bigger navy and colonize land. They can only be build in coastal provinces, and there can only be 1 base per state. (except in vanilla and AHD, where all provinces can hold a naval base)

Default cost per level(this is increased if the national administrative efficiency is less than 100%):

50 timber
50 lumber
100 cement
100 steel
1 machine parts

In addition to the goods, naval bases also have an added 15 000£ price tag after level 1. This cost doubles with each level of naval base. So the total price will be:

level 1 naval base: cost of the goods
level 2 naval base: cost of the goods + 15 000£
level 3 naval base: cost of the goods + 30 000£
level 4 naval base: cost of the goods + 60 000£
level 5 naval base: cost of the goods + 120 000£
level 6 naval base: cost of the goods + 240 000£

Benefits:

Increases naval supply throughput by +10 per level, which limits the size of navy that can be effectively supplied
Gives 30 colonial points for level 1 naval base(and +20 points for every level after that)
Increases colonial range +50 per level
Makes local ship build time 10% shorter per level
Higher levels are needed to build more advanced ships (note that capital ships also can't be built overseas):
- Level 1 required for Man'o'War, Commerce Raider and Steamer Transport
- Level 3 required for Ironclad and Monitor
- Level 4 required for Battleship and Cruiser
- Level 5 required for Dreadnought