Visas: Many nationalities require a visa, and
a few require an invitation as well. Citizens of Andorra, Belgium, the Czech Republic,
Denmark, Estonia, Finland, France, Greece, Hungary, Iceland, Ireland, Italy,
Liechtenstein, Lithuania, Luxembourg, the Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland, the UK and the USA can travel visa-free for stays of
up to 90 days; citizens of many countries do not require a visa if they already have one
for Estonia or Lithuania
Health risks: Tick-borne encephalitis (get vaccinated if you intend to spend a lot
of time in forested areas); do not drink un-boiled tap water