Geodesic dome tents are becoming more and more popular in the recent years and they are highly recommended by tent manufacturers.
The dome tent literally means a spherical shape tent, it is generally built on the ground directly such as concrete, grass or sandy ground.
Normally dry and flat ground is quite perfect for dome tent installation. If you have to install it in continuous rainy days, using moisture-proof mats is not enough. In order to deal with the water seeping situation you have to set up flooring or stage board on the ground first. The terrain under the dome tent should be higher than its surrounding ground area, otherwise even moisture-proof mats and waterproof glue are both used, there would still be water seeping onto the ground under certain weather conditions.