1)
geographical location
climate
Russian language
three capitals
landmarks
nature
mentality
2)There is three capitals in Russia, that fact often surprises foreigners: Moscow, St. Petersburg and Sevastopol.
Russian language is extremely difficult to study by foreigners: the complexity of the cases, conjugation, declension, punctuation and the construction of word order, depending on the meaning of the utterance.
Russian people speak slowly and fairly quiet, love private space and appreciate the sincerity.
Orthodox churches look quiet weird in the eyes of a foreigner: they are colorful, unusual layout and have bright gold domes
3) Foreigners traveling to Russia should remember a few rules of communication received here:
should not be smiling for no reason, you may find inappropriate
do not speak loudly in public places
Try to save someone else's private space for example in public transport
in Russia appreciate patriotism and love of mother-country