I found an 18000 piece Ravensburger “Skyline's of the World” puzzle, with all 4 bags still sealed, at a local thrift store for $5 today 🤗 : r/Jigsawpuzzles
18000, Ravensburger, Historical World Maps - Rare Puzzles
Ravensburger Skylines of The World - 18000 Piece Puzzle (B000EWTKKK) | Amazon price tracker / tracking, Amazon price history charts, Amazon price watches, Amazon price drop alerts | camelcamelcamel.com
Amazon.com: Ravensburger Paradise Sunset 18,000 Piece Jigsaw Puzzle for Adults – Softclick Technology Means Pieces Fit Together Perfectly : Toys & Games
Ravensburger 18000 piece. It took around 14 months : r/Jigsawpuzzles