I am writing a mod for Civilization 5, called Russian wonders. The mod will be about national wonders specific to Russia. By "wonder" I mean any specific cultural, natural or scientific achievements, as Bolshoi, Lenin's mausoleum, Saint Basil's cathedral, lake bailkal and such things. Can any of you please give me more famous locations/places/achievements in Russia I could check and see if I can put them inside?

A wonder splash is like this:
So it must be something visually impressive to gather better effect.