In the US, it's the Congressional Medal of Honour.
The most prestigious is the Fields Medal. See link.
There is no limit. However, since the Medal of Honor is reserved for only the most profound actions far beyond gallantry of others, it is rarely awarded.
In the US, the Medal of Honor is the highest award a servicemember can earn.
They are. Indeed, not only are the military guards volunteers for this assignment, they are required to pass one of the most rigorous tests of their competence for this task. Many soldiers ask for this assignment -- it is the most prestigious that any soldier can receive -- but only the best of the best of those who ask for it are allowed to take part in this honor.
The F.I.F.A world cup is the most prestigious cup.
Porsche was voted the most prestigious automobile brand of 2006.
Very. It is the most prestigious middle school math competition.
In London we live in a prestigious street; in New York we live on one.
The Olympia is the most prestigious bodybuilding competition in the world.
The Graveyard Book by Neil Gaiman won the Newbery Medal, which is a prestigious award given annually to the most distinguished American children's book.
The John Newbery Medal is a prestigious award given annually by the Association for Library Service to Children to recognize the most distinguished American children's book published the previous year. It is considered one of the most notable awards in children's literature.
It means a lot. WKF tournaments are considered the most prestigious karate tournaments. World-class karatekas from different parts of the world come to take part in this tournament. The competition is really tough and winning a medal is a moment of pride.