If you are at all interested in history Tallinn old town is fascinating.It is the largest old town in northern Europe. You come up from the harbor, go besides Paks Margareta (Thick Margaret) the tower towards the harbor, and walk up towards the Town hall square along Pikk (=long), fascinating.
Go and have coffee in Maiasmokk (=Sweet tooth) upstairs -and have a dinner at Vanaemajuures (At the grandma's) or Hansa -which is medieval. Just enjoy walking along. Or climb to Neitsitorni (The Virgin tower) which hosts Tallinn city museums collections or climb up to Toompea. The Estonians are very internetized so you can find a lot on the web-in English. If you are interested of what life was like in rural Estonia, go to Rocca di Mare, their ethnic outdoor museum. The opera is very good -and then, there is a lovely small cafe on Vene (Boat street) on the east side of the old town -a few blocks from Paks Margaret -Vene is parallel to Pikk. It is called cholocaterie de Pierre and is Vene 6. If you go on
http://www.tourism.tallinn.ee/eng you find this with maps and a lot more. If you like old music Hortus Musicus is Very good -if they have something on -but you will find that and a lot more on the net.
Head reisi -have a good trip! wishes mary a