1where 
/ˈweɚ/ adverb
/ˈweɚ/ adverb 1 a : at or in what place
▪ Where are my keys? ▪ Where did you meet her? ▪ Where did you hear that? ▪ Where can I find books about gardening? ▪ Where are you from? ▪ I don't know where that came from. — sometimes + at in very informal speech ▪ Where's the party at?
b : to what place
▪ Where are we going? ▪ Where is she taking us? ▪ Do you know where we're going? — often + to ▪ Where are we going to? ▪ Where to, Miss? [=what place do you want to go to?] 2 : when or at what point
▪ Where does the story get interesting? 3 : how or in what way
▪ Where am I wrong? ▪ Where do the two candidates disagree on the issue? 4 : to what goal or result
▪ Where will this course of action lead us?
▪ Where are my keys? ▪ Where did you meet her? ▪ Where did you hear that? ▪ Where can I find books about gardening? ▪ Where are you from? ▪ I don't know where that came from. — sometimes + at in very informal speech ▪ Where's the party at?
b : to what place
▪ Where are we going? ▪ Where is she taking us? ▪ Do you know where we're going? — often + to ▪ Where are we going to? ▪ Where to, Miss? [=what place do you want to go to?]
▪ Where does the story get interesting?
▪ Where am I wrong? ▪ Where do the two candidates disagree on the issue?
▪ Where will this course of action lead us?
where it's at
informal 1 : the best or most exciting or interesting place to be
▪ Los Angeles, California, is where it's at if you want to get into the film industry. 2 : a subject, field of interest, etc., that is very popular or important
▪ Education is where it's at in politics.
▪ Los Angeles, California, is where it's at if you want to get into the film industry.
▪ Education is where it's at in politics.
where (someone) is at
informal : someone's true position, state, or nature
▪ I haven't quite figured out where she's at [=where she stands; what her opinions are] on that issue.
▪ I haven't quite figured out where she's at [=where she stands; what her opinions are] on that issue.
