China

This photo is widely spread in social media. It's often labeled by "Ming Dynasty", "Rainbow Bridge", "One of the world's most beautiful bridges" or something. The first link below doesn't work anymore, but here is another example
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These postings refer to various locations, which are incomplete or misleading.

The other two links don't work either. These two comments look like spam?

Finaly I found the following link, which shows more photos of this bridge and another bridge aside:
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This Bridge is loacted in China, Province Sichuan, Dazhou City, Dafeng County

The arial view shows the two bridges side by side:
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