I agree completely and will be adding to them in my mod: Words of War and Wonder; from my mod proposal post:
"Natural Wonders: Don't feel like Wonders at all, only workable mountains. Planning to change them to give "Wonder Like" bonuses when worked (and only when worked). For example:
The Grand Canyon (Three in line Hexes): +15% Bonus to Fortified Troops within your borders as long as all three Hexes are worked.
The Great Barrier Reef: +3% Science output for the city working as long as you control a University, +3% Science output for the city as long as it has a Public School -bonus is Per Hex, not "must work all".
Angel Falls (mountain hex, must be at river base): As long as Angel Falls is worked, all River Hexes in this city's borders get +1 commerce.
As it is now, I just don't care about natural wonders, and they were one of the coolest ideas for the game imho. "
I remember reading "If you see one, makes sure you settle by it before someone else does!" before the game came out and was psyched for them -now, I don't even notice them. My first few games I rushed to settle by them, then realized I would have been better off by those four tiles by the stunted river. . .
Natural wonders have been very important throughout history, often being of religious and spiritual significance to the people who lived by them. Niagara Falls helped usher in the electric age, Uluru (ayer's rock) was of great spiritual significance, Mt. Fuji is central in Japanese culture and legend, the Himalaya's (which can be rep'd by Mt.Everest) sheltered India from the mongols and limited their exposure to the rest of Asia, producing a more distinct and less blended culture.
The great barrier reef can be seen from space and is the single largest structure made by living organisms. It's far bigger than anything humankind has built, it can be seen from space, unlike the great wall, and is one of the most bio diverse locations on earth - to me that's a lot more "wonderful" than, say, The Brandenburg Gate.