What is there to see in Detroit?

You can check out the Detroit Institute of Arts, Michigan Science Center, or catch a Detroit Tigers game Comerica Park.  Go check out the Monument to Joe Louis

If you're a gambler there are 3 casinos (MGM Grand Detroit Casino & Hotel, Motor City Casino Banquet Center, and Greektown Casino-Hotel)

There are a lot of great restaurants all over the city too.

Foran's Grand Trunk Pub - http://www.grandtrunkpub.com/

Outside of Downtown Detroit:

Ford Rouge Factory Tour:  http://www.thehenryford.org/rouge/index.aspx

Detroit Institute of Arts: http://www.dia.org/

The Henry Ford Museum- Where the assembly line/automobile was invented. 

Greektown- Best food, possibly the best in the US. Fun to visit casino. Can Walk to nearby ballparks

There are lots to see in Detroit. We were there last July/August (we have family in the area). The  Detroit Institute of Arts is a great museum, I spent an entire day there - the Diego Rivera mural is not to be missed. Lots of paintings from Picasso to Van Gogh to Rembrandt. The  Motown Historical Museum is a short guided visit but a pretty cool one - I knew way more songs than I thought I did! My guide was amazing and sang, clapped and whistled so many tunes, showed dance moves, it was great. 

If you like cool Art Deco architecture, stop at the  Fisher Building (close to the Motown Museum) or at the  Guardian Building (downtown). In both buildings you can take a guided tour (find out the schedule at the  Pure Detroit shops in both places). The store itself is worth checking out, they have a great selection. 

In downtown Detroit, head to  Campus Martius Park, a pretty park in the heart of the city, they will have the ice skating rink and the Christmas decorations up while you are there, and they always have something going on - music, movies, etc. And if you happen to be lucky enough to be in town on Dec 7th, that's when they have Noel Night: they open all of the museums, galleries, churches and other places on Woodward Ave to host musical groups (singers and musicians), dancers, and lots of other Christmas activities, for free. 

There is a lot more to see, let me know if you are interested in anything specific (I'm finishing writing a Detroit travel guide, believe it or not). 

Restaurants: if you like BBQ, there is  Slows Bar-B-Q in Corktown (a neighborhood next to downtown), which is the best in town. If you want Greek food,  Santorini Estiatorio Detroit is the newest and nicest place in Greektown (in downtown). My favorite nicer place is  Roast, in downtown close to Campus Martius, the best restaurant in Detroit in my opinion. And there is always the historical  The Whitney, an upscale restaurant in a beautiful restored mansion (the house is worth visiting, even if you go there just for desserts like many people do). The Whitney is close to the Detroit Institute of Arts. 

Enjoy your visit to Motown, it gets a bad rep but it sure has nice things to offer to those who care to look for its cool side :-)