How to use two themes on a (Wordpress) site?

So I've got a site running Wordpress and for the most part I want to use one theme on it. But for a specific section, I'd like to go for a more Pinterest-style layout. I know the PinThis theme is good for that, and I'd love to implement it, but I don't want to change the theme for the rest of my site. How can I make it so one category has a different layout from the rest? I'm thinking something to do with page templates, but I don't really know where to go from there.

You have to Design that template for that specific section.

So I can design a template that calls a different theme? If so, I'll try and hunt for how to go about doing that. I'm not particularly knowledgeable about php, but I tinker with shit that's already coded when I need to modify it a bit.

When I want a different theme on a different page there always seems to be an even better plugin for the situation.

Give this a try: https://wordpress.org/plugins/jonradio-multiple-themes/

Why not simply install wordpress a second time on the directory you want to have a different theme.

If for instance your main wordpress is installed on http://website.com/

Then install it again on http://website.com/category-with-different-theme/

You will have to login to each section seperately, but still have the full functionality you may loose with plugins.

There are several ways to do this. You can create a different header.php template file and switch out your CSS file links for your other theme that you want to use.

Or, create a PHP if else statement to use a specific CSS file (cascading style sheet) for a specific page.

If you are not that well-versed in coding WP sites, you might try to use a plug-in. However, I find plug-ins often slow down the load times the more that you add to the site. I usually code my own WP themes into HTML/PHP/CSS, so I would just create a different header template file and not use a plug-in. Whatever works easiest for you though.

Thanks guys, some really great suggestions in here. Maybe I'll actually look into implementing this sooner rather than later.