The Riches of Terra

 is one of the monuments which can be built on the Mysterious Island. It unlocks at level 10 and can be upgraded once the player has collected the required resources. The player can gain the required resources randomly by doing their daily actions. Three different resources are required for each monument, out of which one is a "Rare" one. For, the Rare resource is Gold. The Common resources are Pickaxe and Granite. In case the player is lacking one or more units of the resource, they can purchase them with LP. It costs 3 LP for each unit of resource purchased, both Common and Rare.

provides a Simoleon bonus while Cooking, Gardening and Working.

The player will need to complete the Raiders of the Lost Artifacts quest before they are able to build monuments on the Mysterious Island.

will change its appearance at levels 5, 15 and 25. At level 5 the player will receive a Houseboat slot.

Building Costs
It is very easy to calculate the costs of resources required for building a monument. As mentioned above, there are 3 resources - two common and one rare. For any level "N", the amount of each resource required is "N+1".

For example, Level 0 will require 1 unit of each resource. Level 5 will require 6 units of each resource and level 15 will require 16 units of each resource. Remember that GOLD is the rare resource for.

The number of LP required for buying units of a resource is very easy to calculate too. Each unit requires 3 LP. Whether they are rare or common resources is immaterial. Using this data, in case the player is lacking 7 resources, they can purchase it for 7 x 3 = 21 LP.

Boosts
It is recommended to upgrade all monuments only till level 25, as at that level the Volcano will be activated. However, can even be upgraded all the way to level 70.

The table below lists the boosts obtained at all levels. At the highest level, the player can get 625 simoleons.