City are through to the Champions League final, their first appearance in the showpiece event of club football.
The soon to be Premier League champions outclassed and outfought Paris Saint-Germain over two legs, and won 4-1 on aggregate in the semis.
City held a 2-1 advantage from the away leg, and won 2-0 in Manchester on Tuesday night.
"This is remarkable," said Guardiola post-game.
"People believe it's easy to arrive in the final of the Champions League. Getting to the final now makes sense of what we have done in the past four or five years.
"Every day these guys have been consistent. We scored a goal through the hips [of the defensive wall] in the first game, and today Marquinhos hit the bar in the first half - you can be out for little details.
"Manchester United won a title because of John Terry's slip and scored in the last minute against Bayern Munich and Real Madrid won a title against Atletico in the 93rd minute. It's a competition that is so difficult and something in the stars is involved in that.
"I want to thank the owner, the chairman and the staff at the club. This club is about all the people that work behind the scenes, it's not just about money. If you want to think that then you are wrong."