YOU SAID:

I am going to go to a park later on

INTO JAPANESE

私は公園に後で行くつもり

BACK INTO ENGLISH

I'm going to go to the parks later

INTO JAPANESE

私は公園に行くつもり

BACK INTO ENGLISH

I'm going to go to the Park

INTO JAPANESE

公園に行こう

BACK INTO ENGLISH

Let's go to the Park.

INTO JAPANESE

公園に行きましょう。

BACK INTO ENGLISH

Let's go to the Park.