Which sentence contains a dangling modifier?

Having seen the Statue of Liberty, the Grand Canyon is more impressive.

Explanation:

A dangling modifier is a misplaced modifier.

Having seen the Statue of Liberty is a misplaced modifier. In this sentence, it is used to modify the phrase the Grand Canyon, which is not correct. As a result, the sentence does not make sense.

The sentence should be written as something like this:

'Having seen the Statue of Liberty, we all agree that the Grand Canyon is more impressive.'

In other words, the subject that Having seen the Statue of Liberty modifies has been omitted.