If you're walking around downtown and are interested in a cool building, check out The Guardian. Walk in and look around the lobby at the unique architecture!
Not to be confused with the Book Cadillac, Book Tower is home of an interior glass rotunda. Amelia and Tim ate at the (then just-opened) French restaurant Le Supreme that calls Book Tower home, as well as the lobby bar. The rooftop bar is supposed to be excellent, but they have always been full when we have tried to check it out. Maybe you'll have better luck than us!
Detroit LOVES their Coney Island hot dogs (but they just call them Coneys)! The two classic spots are downtown and share a building. But you have to choose: Lafayette or American. There is a strong loyalty to one or the other, so choose wisely!