WordPress has a easy to use gallery feature built in. No need for complicated plugins that only slow your site down, it’s right there in the core for you to use.
Forward takes that one step further with a built-in lightbox image viewer. It includes 10 different styles so you can find one that best fits your needs. If you’d rather not use it, it’s easy to turn off in the theme options too.
Here’s an example gallery for you to see: