PZ Meyers has this blog post... http://freethoughtblogs.com/pharyngula/2012/02/15/the-poll-of-child... pointing out that the Creation Museum is getting pushed into the top 5 on "15 Places Kids Should See Before 15".
I'm voting daily for Yosemite National Park at http://www.budgettravel.com/contest/nominate-15-places-kids-should-....
Note that you don't necessarily need to nominate one. Just look at the long list and hit the "thumbs up" icon.
Also, look at the standings. I wouldn't bother voting for one or nominating one that is not going to make the top 15.
Again... vote daily. Tell your friends. Not that I think this is going to spur someone to send their kid if they hadn't already planned on it, but I still hate to see that one even get nominated.