At the top of the street.

“At the top of Carnaby street is a famous variety theatre…”
I do not understand what the top here means. There is a bottom, too, isn’t there?
Please enlighten me.

Ya got me. I guess it either means literally at the higher end of the street, or at the more fashionable end.

I think it's similar to phrase "go down/up this street"

Well, if someone said that to me here in the States, I'd assume they mean at the top of the hill the street is on.