Who invented Zen Buddhism?

Bodhidharma.

Where did Bodhidharma invent Zen Buddhism?

The Shaolin Temple on Mt. Songshan in northern China.

What did Bodhidharma do to change Buddhism into Zen Buddhism?

He added breathing exercises and punching exercises.

Did the Japanese change Zen Buddhism?

Yes. They removed the breathing and punching exercises.

Then how can someone experience REAL Zen Buddhism?

Come to our Shaolin Zen classes or seminars by Master Zhen. Visit the "SEMINARS" link above for schedules.

Also, visit the ZEN BUDDHIST PODCAST OF SHAOLIN ZEN.