Tallinn, Estonia--Eastern Europe's hidden gem. Most of the city's sites can be found in within the Old Town's stone walls, but be sure to explore outside the walls as well!
(climb the steeple)
Raekoja Plats (Town Square with Lots of Restaurants)*
Patkuli Viewing Platform
Piiskopi viewing platform
If you want to fit in, refer to this library by its Estonian name: Eesti Rahvusraamatukogu. Good luck.
Walking
Trolly
Uber
For 3-5,
* Free
**Free with Tallinn Card