7. Leaning Tower Of Zaragoza, Spain

Built In 1504 And Demolished In 1892
Renowned as the most beautiful Mudéjar tower, this leaning structure featured ornate Islamic-influenced designs and a distinctive triple spire. It captivated locals and visitors for centuries despite its tilt.
In 1892, city officials deemed it unsafe and voted for demolition, sparking protests labeling it an “artistic crime.” The bricks were repurposed for local homes, leaving only a memorial sculpture of a boy gazing at its former site.