have to be seen to be believed

have to be seen to be believed

also must be seen to be believed
so extreme that it is difficult to accept Our spacious new offices have to be seen to be believed!
See also: believe, have, seen

have to be seen to be believed

if something has to be seen to be believed, it is so surprising or shocking that it is difficult to believe The devastation had to be seen to be believed.
See wouldn't be caught dead, have heard the last of
See also: believe, have, seen