(CNN)Here's a look at the life of His Serene Highness, Prince Albert II. He was formally invested as Monaco's ruler on July 12, 2005, following the death of his father, Prince Rainier.
Birth date: March 14, 1958
He is interested in environmental issues, alternative energy and hybrid vehicles.
March 31, 2005 - Monaco's Crown Council transfers the regency of the tiny kingdom to Prince Albert, the heir to the throne, saying that Prince Rainier can no longer carry out his duties as monarch.
Monaco is a sovereign principality, meaning it is ruled by a prince.