Tallinn is a well preserved medieval city with tons to do. In this guide, we give you 12 reasons to visit Tallinn, Estonia. Check out our Tallinn travel guide for all the information to make the most of your trip. We cover the location, main sights in Tallinn, where to eat, and other tips to have a fantastic time in Estonia’s capital. Tallinn boasts Toompea Castle and several medieval taverns.