So, I've been studying different subjects for weeks now and one of those is Environmental Studies. My book involves having to create new planets that can support life and later touches on the subject of terraforming. It's pretty much a large adventure broaching through different environments each with a specific environment and landmark. What I'm worried about is making it believable and wondering if there are angles I've yet to consider. My adjacent biomes are :| Desert > Grassland Steppe > Fungi Forest > Lake > "World" tree > Freshwater Swamp > Karst Fenster (sinkholes) > Mangrove > Coral Reef > Underwater Volcano > Island Network > Jungle Forest (river/waterfall) > Taiga > Mountain > Crystal Cave > Tundra The landmarks I've decided are :| Floating city, temple, moving tent city, Atlantis inspired underwater city, and then I draw a blank. I seem to be just doing variations on settlements. Bleh. My two questions :| 1) Do the biomes I listed work together adjacently? (Progression) 2) Are there any other natural or man-made landmarks I'm forgetting? I want to be able to attach something unique to each environment. Well, multiple things to be honest, though I can always work with flora & fauna.