Denmark (excluding Greenland and Faroe) should be included. Its highest point on land is 171m, its tallest man made structure, the Great Belt Bridge is 254m.
Also, definitions of 'mountain' differ, but I think it's fair to say that the word does strongly imply something significantly taller than 5m. At the very least I'd include a caveat acknowledging that many people wouldn't consider some of these (or even any) to be mountains in the normal sense of the word.
Great idea, I've learned (arbitrary) definition of a mountain stating its tallest peak has to have an elevation of at least 500 meters. Yet, arbitrary definitions are rarely of any importance in quizzes like this one.
The height is highly subjective. The Rock of Gilbraltar for example is less than 500 meters, but looks way more like a mountain than a lot of 3000+ meters hills on the Altiplano
Unfortunate that the quiz doesn't imply that the building is taller than the highest mountain. I understand why you did it this way but it would have been a more satisfying logic
Guess I missed it.
Also, definitions of 'mountain' differ, but I think it's fair to say that the word does strongly imply something significantly taller than 5m. At the very least I'd include a caveat acknowledging that many people wouldn't consider some of these (or even any) to be mountains in the normal sense of the word.
Also if a mountain is defined as a landform over 610m, there are only 4 buildings in the world tall enough to be taller than any mountain.