Simplify the following text for a Grade 6 native English-speaking person.
Original: Various lists of the Wonders of the World have been compiled from antiquity to the present day , to catalogue the world 's most spectacular natural wonders and manmade structures .
Simplified: Like with the other lists of wonders , there is no single list of seven natural wonders of the world , as there have been arguments over how large the list should be . One of the many lists was compiled by CNN .