How do you walk from Penn Station to the Winter Garden Theater?

Penn Station is at 33rd to 34th Streets, between 8th and 7th Avenues. The Winter Garden Theatre is on 7th Avenue, between 49th and 50th Streets.

For some reason, the address of the theatre is 1634 Broadway, when in fact it is on 7th Avenue, not Broadway. I entered the address "1634 Broadway" on google Maps, and the location it showed was on 7th Avenue, not Broadway. I even zoomed into Street View, and indeed, the theatre is right there on 7th Avenue. I'm looking at a picture of it right now, and it is very obviously on 7th Avenue.

I have no idea why the address would be 1634 Broadway when the theatre is not on Broadway, but I thought it worth mentioning to avoid confusion. To get there from Penn Station, just walk up 7th Avenue. If you exit Penn Station onto 8th Avenue, then walk 1 block east to 7th, and follow 7th Uptown.