In order to get a Russian visa you have to apply to the Russian consulate in your country. Besides a standard package of documents, such as your application form, your passport and photo, it is required to provide an invitation letter issued by a Russian party. This requirement is sometimes overlooked, so please make sure you have one before you apply for your tourist visa to Russia.
IWIR Travel agency, in partnership with iVisa Visa Service LLC, will be happy to provide such an invitation letter for your Russian visa.
There are two ways to get such an invitation: express self-service and 24-hour assisted service.