Yonge Street, Toronto
Yonge Street, known as the longest street in the world, is the main north-south road that divides Toronto into east and west.
Many visitors to Toronto end up spending most of their time on the downtown section of Yonge St. because they are told it is the place to be. This is highly misleading and is not representative of the city. This part of Yonge St. is run down, is home to many tacky tourist shops and is in need of a major facelift. The city has already begun this lengthy project to Yonge Street around the Toronto Eaton Centre (it's about time!). However, north of this area on Yonge (between Dundas St. and Wellesley Ave.) should be avoided for the time being. It wouldn't hurt to take a stroll in that direction if you are curious, since there are a few good shops along the way, but try not to spend too much time here. Instead, venture to other areas such as Queen Street West (equivalent to New York city's SOHO), the Entertainment/Theatre District and posh Yorkville area to name a few.
Hope this helps and if you have any questions, feel free to ask!
There is more to Toronto than just Yonge Street, which is the most famous street here. There are many different areas of interest, even within the downtown core so don't just stay on that street or you miss what Toronto has to offer.