Nationals of most countries (including EU countries and the U.S.) require visas in order to travel to Russia. Once in Russia, registration is also necessary (usually at the hotel). Visa requirements and fees vary from country to country; please check with the Russian embassy in your country of residence.
The Euler Institute staff will be happy to assist you with visa arrangements. The two main options is getting a tourist visa (single entry) and getting a business visa (which can be single, double or multiple entry); see e.g. this link for the explanation of the difference between these types of visa.
Tourist visaTourist visas can be obtained on a commercial basis at many tourist agencies in your country. You may find this to be the easiest option; in this case you will not need any help from us.
You can also obtain a tourist visa at the Russian embassy in your country of residence. In this case you will need an invitation. Such an invitation can be arranged by the Euler Institute staff; this involves a fee of approx. Normally it suffices to have a copy (not necessarily the original) of the invitation in order to get a tourist visa. Such a copy can be sent to you as a scanned pdf file.
Business visa for residents of the EU countriesIn order to obtain a business visa (at the Russian embassy in your country of residence) you will need an official invitation from the Euler Institute. Such an invitation can be provided by the Euler Institute staff free of charge. However, you will need an original of this invitation in order to obtain a visa. The original will be sent by an express mail, which costs approx.
Business visa for non-EU residentsIn order to obtain a business visa (at the Russian embassy in your country of residence) you will need an official invitation from the Russian ministry of interior. Such an invitation can be obtained by the Euler Institute staff, although this involves a certain administrative effort; this route should be avoided unless it's necessary. Obtaining such an invitation takes at least 4-6 weeks. In many cases, a copy of this invitation suffices (please check with the Russian embassy); such a copy will be sent to you as a scanned pdf file. If the original is required, this adds the postage (depending on your country of residence) to the charge.
Police RegistrationOnce in Russia, all foreign nationals need to register. This is usually done at your hotel and costs about 1000 RUB. The Euler Institute staff can assist you with this.