Cats love empty cardboard boxes. Whenever there is a cardboard box around, they will go there for sleeping, playing and scratching. It sounds like cat owner just need to prepare a cardboard box instead buying those fancy gears for their beloved cat. But if there are any choices, owner just want to give something look nicer to their room and still get appreciation from their cat. Under that knowing, a team of Amsterdam-based creatives has come up with seven designs that mimic iconic structures found around the world, which includes the Eiffel Tower, the Taj Mahal, and The White House. They’re made from recycled cardboard and are double-layered for extra durability. The ‘landmark’ series is currently seeking funding on kickstarter, if you think your cats might love them, head over the page to show some support.