I see.

There are many sights in Kuala Lumpur to keep tourists.

It's possible, but it's not meaningful. For example, you might want to say what it is that the sights will do for tourists:

There are many sights in Kuala Lumpur to keep tourists interested.

Here, the sights are not 'keeping tourists'; they are 'keeping them interested'.

Do you see what I mean?

PaulM