Folder in views

Can you help me understand how can I have access to my folder in "views"?

In my "views" folder I have:

• home.ejs
• cases.ejs
• about.ejs
• Solutions folder.

In "Solutions" folder I have:

• solution1.ejs
• solution2.ejs.

For home.ejs, cases.ejs, about.ejs I can render pages in this way:

app.get("/", function(req, res){
    res.render("home")
});

app.get("/cases", function(req, res){
    res.render("cases");
});

app.get("/about", function(req, res){
    res.render("about");
});

Now my question is: how can I render solution1.ejs and solution2.ejs which are in "Solutions" folder?