Cincinnati seems to have a bad reputation about 'there not being anything to do" - the following is a list of websites, museums and Cincinnati's downtown area!  Also, note that Northern Kentucky is just across the Ohio River.  There is a "Purple People Bridge" that enables you to walk across the river to Newport on the Levee without needed to drive or hire a taxi!  Enjoy! 

Cincinnati Art Museum
Tel: 513/721-5204
953 Eden Park Dr
http://www.cincinnatiartmuseum.org/
** At the top of the Hill from Eden Park is Mt. Adams.  You can see great views of the city from Mt. Adams. 
Also, if you are looking for night life, Mt. Adams is the place to go! 
Check out "A Live One" http://www.aliveone.com/cincinnati.html and "Mt. Adams Pavilion" http://www.mountadamspavilion.com

Cincinnati Museum Center
Tel: 800/733-2077
1300 Western Ave
http://www.cincymuseum.org/

Cincinnati Zoo & Botanical Garden
Tel: 800-94-HIPPO
3400 Vine St
http://www.cincyzoo.org/index2.html
** If you will be in Cincinnati in the winter.  Go to the Zoo at night for the "Festival of Lights" it is a great way to spend the evening whether you are a family, a couple or a group of friends!

Contemporary Arts Center
Tel: 513/345-8400
44 E. Sixth St
http://www.contemporaryartscenter.org/
** Before you go... Make sure you check out what exhibits are taking place.  Some of the may be too much for young children.  Although, there is a section of the museum completely dedicated to children!  There are also some great restaurants near this area!

National Underground Railroad Freedom Center
Tel: 877/648-4838
50 E. Freedom Way
http://www.freedomcenter.org/

Taft Museum
Tel: 513/241-0343
316 Pike St
http://www.taftmuseum.org/

Along Cincinnati's Riverfront...

Sawyer Point
Take a walk along the Ohio Riverfront at Sawyer Point
http://www.cincinnatiusa.com/Attracti...
** Wednesday afternoons during the Summer, Sawyer Point is the place to be for Party in the Park!  It is a great way to hear live music and mingle with other Cincinnatians wanting to let loose during the summer work week!

Bengal's (Paul Brown) Stadium - Home of the Cincinnati Bengal's
Who Dey!!
http://www.bengals.com/stadium/paulbr...

Great American Ball Park - Home of the Cincinnati Reds
http://cincinnati.reds.mlb.com/NASApp...

Newport on the Levee (on the Kentucky side)
http://www.newportonthelevee.com/
** Just across the Ohio River is Newport on the Levee.  There is a huge AMC movie theater, an iMax, plenty of restaurants, an Aquarium and much more!  As mentioned above, you can walk across the river to Newport on the Levee - But, if you don't want to, there is a parking garage!