A cluster of buildings cited by critics and historians for the “Top 125 Buildings” since 1891 didn’t make it onto our final list. But these distinctive works of architecture are singular in their use of a formal language or their inventive exploration of materials—and some are just over the top. Most of them are outside the United States and, because they are harder to visit, may have received less attention. Yet they have left an indelible mark on the minds of those who know them, whether by personally visiting the sites or by savoring their presentations in history books, architectural journals, or online. Not all those qualifying for this category have been included: we stopped at 25. But if you have more suggestions, keep them: our 150th anniversary is coming up.