It's odd, but there are tons of abandoned places all over the globe. It is weird to think about the fact that sometimes buildings just go unseen for decades. Abandoned places range from small houses to churches to airports to mansions, there are abandoned buildings of all sorts in the world. There are abandoned trains, cars, and planes, too.

It is unusual to see these normally high-traffic places so empty and quiet. They raise questions pertaining to how the building got to be abandoned, what used to go on when it was not abandoned, and what may happen to it someday. Sometimes, it is really hard to say how and why something so cool was abandoned. There are answers to some of these mysteries, but others remain unknown.

Many people who go looking for these abandoned places to explore choose to share photos of them online for all to see. Here are 25 images of abandoned buildings, monuments, and other places that have been untouched for so many years.