In the current tradition of European Monarchy, with the exception of the thrones of The Netherlands and Luxembourg, only the death of abdication can send the next ruler the throne.
Here are the two Kings-in-Waiting of Europe.
Europe’s Kings-in-waiting, the Prince of Wales is the eldest. He was born on November 14, 1948 and this year (2010), he will be 62 years old unheard for a British heir apparent to ascend the throne. In British history, the oldest to become King was William IV, he was 70 years old when he succeeded the throne, but he was not the heir-apparent of his brother, King George IV, but only the heir-presumptive.
SPAIN: Prince Felipe, the Prince of
Prince Felipe is very athletic and out-going, and just like his father and maternal uncle, King Constantine II of
Greece, he has a great passion in sailing which he took part in the 1992 Olympic Games in . Both King Juan Carlos and King Constantine II are Olympians, participating in the 1960 Sailing event representing their respective countries while still Princes. Barcelona