People can watch dancing displays or can take part in different games. Nowhere, however, do they have more fun than in the Mexican town of Puebla.
Why does the sentence in bold use a question form, but there is a period in the end?
People can watch dancing displays or can take part in different games. Nowhere, however, do they have more fun than in the Mexican town of Puebla.
Why does the sentence in bold use a question form, but there is a period in the end?
This is an inversion, but not a question.
In formal English, with a negative adverb like "nowhere" or restrictive like "only" in initial position, the auxiliary verb inverts with the subject:
I can find my keys nowhere -> Nowhere can I find my keys.
I will visit you only on Saturday -> Only on Saturday will I visit you.
I rarely play tennis -> Rarely do I play tennis.
Because the sentence isn't a question, it doesn't end with a question mark.
Nowhere, however, do they have more fun than in the Mexican town of Puebla.
Compare that to:
They don't have more fun anywhere than in the Mexican town of Puebla.
That sentence is not a question. If you start a sentence like that with the word nowhere, it requires using the auxiliary like that.
Nowhere do they make better soup than here.
Compare that to:
They don't make better soup anywhere than here.
Nowhere did the Vikings sail more quickly. The Vikings didn't sail anywhere more quickly.
There are other cases of words that also do this; mostly adverbs of frequency like rarely, seldom, never and frequently. Sometimes the sentence can be more literary but sometimes not.
Never had she seen such a mess in an office. It is more written than spoken but can also be spoken.