Fat Margareta- 16. Cent . Tallinn's most impressive defensive structures , the Great CoastalGate (Suur Rannavärav) and Fat Margaret 's Tower. They were built not only to defend the city from the seaward side of town, but also to impress any visitors arriving via the harbour. Fat Margareta used to be a prison . It is a town wall ’s building . Now it's home to the Estonian Maritime Museum , which provides a detailed look at the nation 's seafaring past.
The Great Coastal Gate - with the Viru Gates , are the last of six gates that controlled access to the town in Medievaltimes .
Kolm Õde - a hotel . In 2003, three of Tallinn’s splendid merchant houses , built in 1362, were renovated and united to create The Three Sisters, which now offers modern amenities with great design and a backdrop of medieval history.
Oleviste church– baptism. Believed to have been built in the 12th century and to have been the centre for old Tallinn's Scandinavian community prior to the conquest of Tallinn by Denmark in 1219. A legend tells that the builder of the church, namedOlaf , upon its completion,