The most common and most likely answer to this crossword clue is the 8 letter word PARADISE
I've seen this crossword clue in The Times
P
A
R
A
D
I
S
E
More clues leading to the result PARADISE
- Spectacle that moves around is promised land
- Small island in March is blissful place
- Heaven is being trapped in a row of shops
- Ecstasy is available in a number of shops
- Place for first flowers presumably is in March
- Ceremonial march around island, a heavenly place
- . Ideal place is available in March?
- Delight as extremes of arachnophobia treated with spider
- Eden Project’s opening raised a bomb
- Garden of Eden is in exhibition
Buddy explains!

The straight part
We know that "Heaven" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case heaven = paradise.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PARADISE mean?
PARADISE noun- The place where sanctified souls are believed to live after death.
- (Abrahamic religions) A garden where Adam and Eve first lived after being created.
- A very pleasant place; a place full of lush vegetation.
- A very pleasant experience.
- An open space within a monastery or adjoining a church, such as the space within a cloister, the open court before a basilica, etc.
- A churchyard or cemetery.
- The upper gallery in a theatre.
- To place (as) in paradise.
- To transform into a paradise.
- To affect or exalt with visions of happiness.