Much bigger than Niagara...Much less tourists than Niagara

and where is it?

Usually going to something in your continent is easier than going across the world

As someone who's been there, I'll say it's worth the breath

I'd hate to see a place like that get filled with tourists.

Fewer! D:

it's really a breathtaking view and it's not so crowded! i went there and i couldn't stop taking pictures...

Victoria falls is the tallest in the world and Niagra falls is the widest so you can really say ones bigger than the other

Fewer. Fewer tourists. If you can count them in a group, use "fewer". If you can't, use "less".