I have 2 daughters from.first marriage and they live with there mother. My elder daughter is 12 year old who insist me to.visit her in there home her mother is not my wife so can I visit there house . My current wife don't want me to go there house and always get angry when I.visited my children as she feel.very Insecured . Please reply as I don't want to do anything against my region .

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

There is no blame on you in visiting your daughters at your ex-wife’s house, taking the Islamic regulations into account and keeping away from what brings upon temptation.

Ar-Ruhaybaani said in Mattaalib Uli An-Nuhaa: “Remark: “A Man is not prohibited from visiting his daughter at her mother’s (his ex-wife) house on condition that they should not be alone, and he should not stay for long. That is because the mother became irrevocably divorced from him.” [End of quote]

This is if we assume that the wife has already become irrevocably divorced from her husband; yet, in case she is still in her waiting period from a revocable divorce, she takes the ruling of a wife, and the husband is thus permitted to enter the house without her wearing the Hijaab.
In case there is no way for you to get into the house, you can see your daughters and talk to them at the door, for example.

Your second wife does not have the right to object to your visit to your daughters. However, you can pay the visit without informing her in order to avoid any problems with her.

For more benefit on the custody of children and right of visiting them, please refer to Fataawa 326341, 86891, 87762, 88331, 89832, 182019, 213352, 82128, 341287, 84575 and 86053.

Allah knows best.