Suggested sightseeing
The Rock and Roll Hall of Fame 216-781-ROCK
The Great Lakes Science Center* 216-694-2000
The Cleveland Metroparks Zoo 216-661-6500
The Cleveland Museum of Art 216-421-7340
The Cleveland Center for Contemporary Art 216-421-8671
HealthSpace Cleveland 216-231-5010
Crawford Auto-Aviation Museum 216-721-5722
NASA Lewis Research Center 216-433-4000
The Cleveland Children's Museum 216-791-KIDS
The Cleveland Museum of Natural History 216-231-4600
Trolley Tours 216-771-4484
Colonial Carriage Tours 216-351-8171
Goodtime III (sightseeing boat) 216-861-5110

There is plenty of good shopping downtown too.
*If you want to see a movie at the Omnimax Theater, it would be a good idea to reserve tickets.