folly
US /ˈfɑː.li/
UK /ˈfɑː.li/

1.
locura, insensatez
lack of good sense; foolishness
:
•
It would be folly to ignore his advice.
Sería una locura ignorar su consejo.
•
The decision to build the bridge there was an act of sheer folly.
La decisión de construir el puente allí fue un acto de pura locura.
2.
locura, capricho arquitectónico
a costly ornamental building with no practical purpose, especially one built in a large garden or park
:
•
The estate featured a beautiful Gothic folly.
La finca presentaba una hermosa locura gótica.
•
Many grand country houses had architectural follies in their grounds.
Muchas grandes casas de campo tenían locuras arquitectónicas en sus terrenos.