A Porthole, Also Known As Bull's-Eye, Is A Commonly Seen Circular Metal Frame Attached To The Body Of Ships To Allow Light and Air In. Although the term comes from the sea, it's also used to talk about the round, open areas found on tanks, planes, cars, and even spacecraft. On a ship, when a porthole is open, it lets in light and fresh air to the dark and often wet areas below the deck. It also gives people below deck a small view of the outside when it's closed in the past. Our replica still works just like the old ones, but it's not completely air-tight or air-proof. It's a stylish and elegant addition to any room with a nautical theme. This lovely nautical window is both practical and fashionable. It will enhance your nautical wall decorations perfectly. Consider placing it in your lake house, bar, or any other nautical-themed space you can think of. This Mediterranean-inspired wall decoration is an excellent choice for living rooms, homes, shops, pirate-themed rooms, seaside gardens, patios, tiki-bars, floating tiki, nature-adventurous wild camps, vans, etc. The possibilities are endless and limitless.