Who is the bird with biggest wing span?

The Wandering Albatross, which has a wingspan of 3.5 - 4 metres (12-ish feet), is the bird with the largest wingspan alive, both on land and sea. Close behind is the Andean Condor, the largest wingspan of a land-bird (as opposed to a sea-bird), at around 3 metres (11-ish feet). Hope this helped!