Every foreigner needs a visa to travel to Russia. In order to get it, you need an invitation (visa supporting letter). After that, you can apply for your visa at a Russian Consulate either by yourself or through a local travel agent.

Registration

Foreign citizens staying longer than 1 day in Moscow need to register their stay. Registration can be done upon arrival in the hostel.

KGB building on Lubyanka sq.

Built in 1898, it was the main headquarters of the KGB during the Soviet Union.