Absolutely - Kingston and the Thousand Islands - it is about 2 hours drive from Ottawa on the shores of Lake Ontario. It is an absolutely beautiful city - and one of the oldest in Canada - it celebrated its tercentennary over 35 years ago. You can take a Riverboat tour of the Thousand Islands, have dinner on the water, visit Old Fort Henry (built to defend Canada during the War of 1812), lots of museums and historic sites, some beautiful landscape, great shopping, artisan's and craftspeople boutiques, excellent restaurants, a super Farmer's market - and lots of other things to see/do along the way. You can visit old Portsmouth Harbour where the 1976 sailing olympics were held, take a ferry (for free) over to Wolfe Island, lots and much more:-). Here is a link:
http://www.kingstoncanada.com/ It is also my hometown:-).
In Ottawa, you will want to tour the Parliament buildings, and the Canadian Museum of Civilization, the Byward Market - and possibly take a drive over in Quebec in the shade of the Gatineau Mountains.