Estonia packs a medieval capital, a university town and a Russian-speaking industrial east into a country you can cross in a few hours. Tallinn's walled old town is the obvious draw, Tartu carries the academic life, and Narva on the eastern border sits directly across the river from Russia.
The guides collected here cover Tallinn, Tartu, Narva and Estonia overall. Summer brings island ferries to Saaremaa and Hiiumaa and long northern evenings; winter is dark but short on distances, and Tallinn's old town handles snow well. Ferries link Tallinn with Helsinki in about two hours, which makes a combined trip to both capitals a common and simple arrangement.