In 7 Wonders, all the Age cards represent structures.

There are 7 different types of structures, easily recognizable by the border color of their card.

- Raw Materials (brown cards): these structures produce resources

- Manufactured Goods (gray cards): these structures produce

- Civilian Structures (blue cards): these structures score victory points

- Scientific Structures (green cards): these structures score victory points depending on your progress in the three scientific fields . There are 4 green cards for each symbol!

- Commercial Structures (yellow cards): these buildings earn coins, produce resources, change commerce rules and sometimes earn victory points.

- Military Structures (red cards): these buildings increase your military might . This comes into play during Conflict resolution.

- Guilds (purple cards): these buildings allow players to score points according to specific criteria.