Please put a screenshot and describe in a different way. Your description is incomprehensible.
You could also turn your spread view in 90° steps, it is found somewhere in the page panel in a sub menu. But because you did not mention exactly which version you are using you have to search yourself.
no se entiende bien el problema ¿querés que en el mismo documento haya hojas verticales y horizontales? la solución de Willi apunta a rotar la vista de las páginas pero no la pagina realmente.
You could change the real page (or a master) with the page tool. But it depends how it is produced. If it is a printed product you might prefer only to rotate the view during work, it is mainly supposed to be used on screen, a landscape page orientation might be better.
Sorry, that I don't answer in lengua Castellana, but I don't know how the menu and tool items have been translated, that's why I answer in English.
Perdona che no estoy respondiendo en lengua Castellana, me faltan las expresiones de InDesign en tu idioma.