The album had no title and no band name on the cover, only an old painting of a man carrying sticks, hung on a ruined wall. Each member chose a symbol for the inner sleeve, which is why it is sometimes called Four Symbols.
Most of it was recorded at Headley Grange, an old house in Hampshire. Stairway to Heaven was never sold as a single in the UK or the US, yet it became one of the most played rock songs on radio, and the album has sold tens of millions of copies.
Source: Wikipedia