Sgt Pepper Album

Piper At The Gates Of Dawn and DSOTM are high up there for me (no pun intended).

I was going to include In The Court Of The Crimson King by King Crimson, but that came out two years later.

I was 19 when Pepper was released in mid-67 followed by 'Magical Mystery Tour' later the same year, and needless to say both albums blew everybody's socks off..
Incidentally if you ever visit Plymouth UK, you might notice tourists photographing each other standing and sitting on a small patch of grass at the west end of the Hoe. That's because it's the exact spot where the Beatles sat for this photo which was taken during the making of their 'Magical Mystery Tour' film-

A ground breaking album that changed the course of history and music. The summer of love. I'm 16 years over 40