Let's make this birthday one to remember.

81 years old (Born on December 15, 1943)

Happy Birthday, Lucien DenArend! May your celebrations be as spectacularly precise and joyfully geometric as your remarkable sculptures. You've shaped cities beautifully through timeless pieces such as "Europa" in Haarlem, influencing the public art scene with artistry that's both inspiring and intriguing.

Here's hoping this year brings more dimensions of success, exciting new projects, and fewer awkward moments explaining abstraction to puzzled admirers. May every angle of your special day align perfectly with relaxation—and may no stray pigeons mistake one of your masterpieces for their perch again! Warmest wishes on another fantastic rotation around the sun—sculpting brilliance forevermore!