Travel Tours/Guide with things to do?

Hi all. I'm looking for a website, or company that has either a travel guide or tour( or at least a tour like outline) with specific things to do, with the places, prices etc on it.

So I was hopinh there was something out there that had like
"Cliff Dive in Mexico at Blanky Cliff in Cancun for 30 dollars"
Or something along those lines. Or even if its just has a bunch of things to do.

Cancun, Mexico would be great but if you know of any other warm sunny place with something like that it be great as well!
I've seen the Expedia(?) commerical for Cliff diving in Mexico, and I want to try that but on expedia i couln't find anything for it.

http://www.cancun-map.com/cancun_ing.asp

http://www.go2cancun.com/
http://www.world66.com/northamerica/mexico/cancun