In various parts of the world, unique structures can be found in extreme landscapes. These include a hotel made of ice and a partially buried observatory, among others. There are a total of 14 such constructions, each with its own distinct features.

Further information about these structures can be found through additional sources. For those interested in learning more about unusual architecture, particularly in rural Spain, related articles are available, such as one discussing unexpected architectural finds in the Spanish countryside, including wineries, hotels, and cultural centers worth visiting.