There are a lot of investment you may find this world that less risk. If you buy land or gold, you have invest your money because you can sell it in higher price after quite long time because land and gold price is tend to increase over time.
Land price will increase high if the development at that area in increase fast. Gold price will increase fast due to inflation. Economic crisis that lead by war, debt failure, high oil price can also increase prices, including gold.
Land is a kind of slow investment because the price is fairly slow rise and to sell land you need longer time. But it is the most less risk investment because land price is rarely fall down.
Development is always spread out to new place. Every land is touch by development that will increase the price. Factor that will weaken land price is disaster.
Gold is another less risk investment because the price is rarely fall down. If the gold price is down it will just a moment, and the price will increase again. You can use price fluctuation to get more profit from gold and this buy and sell will easily to do because gold is the most liquid investment.