The Masonry Grid
The Masonry Grid snuggly positions images to fill empty space, given portrait-orientation images some extra weight. You're likely familiar with this layout from sites such as Pinterest.
Of course, the Masonry layout includes all of the same perks as the Classic grid style, including lazy-loading, SEO-optimizations, optional metadata display, etc.
The images in this gallery are of Batad, Luzon, Philippines, a mountain village without roads.