Must see old town and museums. You can skip seeing other regions of city, but for good memories visit old Riga for sure! :)
Skybar view is kaleidoscopic, Old Riga is magical , do see Alberta street and Elizabeth street, churches in the old center and the museum of the occupation,the House of the Blackheads, the Museum of War, the Powder Tower, and the Dome Cathedral at Riga. Here you are transported to ancient times. Sigulda, Cesis, the fantistical Rundales castle, the Open Air Ethnographic Museum is interesting, Urmala and the view of the sea, try Latvian food in the quaint restaurants .
Please let me know about the must-see places in Riga, Lavia. Any suggestions where to have to eat or go out? Thank you in advance!