I’m going to the swimming pool to swim.
I’m going to the shops to buy a T-shirt or to buy some chocolate.
I’m going to the post office to send a letter.
I’m going to the cafe to drink coffee.
I’m going to the library to read a book.
I’m going to the cinema to watch a film.
I’m going to the bank to check my money.
I’m going to the aquarium to see the fish.
I’m going to the park to ride my bike.
I’m going to the stadium to play football.