what are the seven wounders of the world (seriously)?

Question

as my brother wants to visit or explore them all

Answer 1

http://en.wikipedia.org/wiki/Seven_wonders

Originally they were Ancient structures -- most of which no longer exist, but there are newer lists which are provided on the Wikipedia site.

There's actually an organization to vote for the "New 7 Wonders"
http://www.new7wonders.com/index.php?id=315&L=0