Spend time in Riga active and play indoor paintball in the biggest Soviet Riga factory facilities VEF! Arena is located in former Soviet industrial area of Riga only 20 minutes away from the Riga Olf Town and will be interesting to see as well if you are into this kind of stuff
Enjoy Latvian sauna in the center of Riga on float, oposite the Riga old town, while drifting in the middle of river Daugava. Enjoy recreation in the sauna with a great view on the city and relax in the hot tub. That's all just 5 minute drive away from Riga Old Town!
Active recreation in nature not even leaving Riga? It's real! Boating on kayak in the center of Riga is completely different tour. From water you will see the city from completely different angle and experience new emotions. Enjoy boating with an experienced instructor and seeing green parks, many of Riga bridges, old Riga, hearing different sounds from those who are exploring on shore.