The past participle of the verb to come is come, so you should say “I have come to a place where…”. came is the past tense (or
Which is correct has come or has came?
Only the first one is correct because the basic form of perfect tense is have/has/had + past participle. Come is a confusing word in English because its plain form and its past participle form are the same. The sentence #1 is grammatical.
Is come or has come?
'is come' tells about the present state; 'has come' is focused on the event.