Just ask and our hosts should be more than happy to take you to the shrine or temple they mentioned on their profile that is near their house. Or if it's during the springtime, they might be able to show you their neighborhood park with sakura cherry blossoms.
Keep in mind that they are not volunteer tour guides so they are not obligated to show you around for a full day. However, what they can do is share their time and knowledge depending on their availability on that particular day you are visiting them.
The key is to ask.