# Famous Buildings
Famous Buildings are the cornerstone of city building in **Reality Rush**. They are essential for significant [city growth](https://city-whitepaper.gitbook.io/reality-rush/getting-started/city-levels) and are the main components for players. Without them, growing a city is almost impossible, or at least extremely difficult. These buildings can be acquired only through [lootboxes](https://city-whitepaper.gitbook.io/reality-rush/getting-started/lootboxes), but we have prepared plenty of free lootboxes for our players!
### Importance of Famous Buildings
With each level you achieve, you will unlock more tiles on the map, each tile representing a space to place a Famous Building. At the endgame, you will be able to have a total of 20 active Famous Buildings, all boosting your [RP Points](https://city-whitepaper.gitbook.io/reality-rush/getting-started/rp-points) from tapping and passive generation. This is the primary way for players to increase their points per tap.
### 3D Representation and Development
Each Famous Building is a 3D representation of a real-world landmark, meticulously developed by [Reality Metaverse](https://www.realitymeta.io). These landmarks not only enhance your city visually but also provide significant gameplay benefits.
### Famous Buildings System
Famous Buildings have a unique system that includes Building Tiers and Building Grades, each contributing to the overall effectiveness and RP Points generation of your city.
#### Building Tiers
Each Famous Building has a different tier level, which determines its base point generation. Higher tier buildings generate larger bonuses. You can merge buildings from the same tier to create higher grade buildings.
Tier 1: ⭐️⭐️⭐️⭐️⭐️\
Tier 2: ⭐️⭐️⭐️⭐️\
Tier 3: ⭐️⭐️⭐️\
Tier 4: ⭐️⭐️\
Tier 5: ⭐️
#### Building Grades
Buildings start as a base building, represented by the red color. By merging buildings from the same tier, they can be further expanded into higher grades:
* **Base (Red)**: The initial grade of a building.
* **Uncommon (Green)**: Upgraded from the base by merging.
* **Rare (Blue)**: Provides greater bonuses and requires merging uncommon buildings.
* **Epic (Purple)**: Offers significant bonuses, requiring rare buildings to merge.
* **Legendary (Orange)**: The highest grade possible from lootboxes, providing massive RP Points generation and requiring epic buildings to merge.
* **Artifact (Yellow-Gold)**: Only available from merging Legendary. Provides additional boosts to RP Points and offers passive [Tickets](https://city-whitepaper.gitbook.io/reality-rush/real-value-rewards/ticket-sweeptakes-system) generation.
* **Titan** (**Platinum)**: The ultimate level famous building. Owning it is a greatest achievement due to its rarity. Adds additional RP Points boost and a large passive [$RRUSH](https://city-whitepaper.gitbook.io/reality-rush/usdrrush-token) generation.
Grades offer players the possibility to earn substantially more RP Points than the base version of the buildings. By strategically merging and upgrading your buildings, you can maximize your city's point generation and overall success.
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