1- what the best 1 or 2?
2 - 2 use tense correctly?

1
"Spent the day exploring a new city and discovering hidden gems. Traveling is the best way to broaden your horizons!

2
I have spent today explored new city and explored hide treasures .
The traveling is best way to expanding your mind

Question

1- what the best 1 or 2?
2 -  2 use tense correctly?

1
"Spent the day exploring a new city and discovering hidden gems. Traveling is the best way to broaden your horizons!

2
I have spent today explored new city and explored hide treasures .
The traveling is best way to expanding your mind

Answer

There are grammar and punctuation mistakes in the second one. Also, it is ambiguous a bit. But the first one is correct.

Answer

1 is good but kind of informal without the subject. Just add 'I' at the beginning if it's for a more official writing style.

2. has a lot of errors, as the other correction said.