ELI5: Explain Like I'm 5

Tower house

A tower house is a type of structure that looks like a tower. It usually has a lot of tall and thin walls, so it looks like a big tower. Inside, there are several floors, connected by stairs. The top floor is usually the tallest part and sometimes has an open roof at the top. People used to live inside tower houses in the past, and they were sometimes used to protect people from enemies too.