This is one of the biggest and hardest puzzles I have been involved in putting together! My mom had received it as a gift shortly after discovering her love for puzzles. After several smaller ones, this 1500 piece project by Trefl was the challenge she wanted. As you can see from the photo, it is a nature scene, a beautiful picture of Banff National Park in Canada. I have not done very many jigsaw puzzles, but from what I know, nature scenes can be very difficult to put together - all those green leaves, shades & sunny spots, blue sky, water. Well, this puzzle has them all. Even mom, with her remarkable patience, found some of the spots a bit too hard to do and accepted my help. Both of us enjoyed working on the puzzle though. The completed puzzle looks so nice that we want to have it framed. I'll need to get some puzzle glue first to glue the pieces permanently together.