Today’s Solutions: December 18, 2025

To call it a tree house would be almost insulting to Sweden’s Treehotel. The Lapland lodging opened its doors—or, rather, dropped its ladders—in 2010. Since then, thousands of guests have taken in the Lule River valley views from its treetop windows. The Treehotel has five different rooms; one resembles a bird’s nest, another a UFO. But staff says the Mirrorcube, designed by Swedish architectural firm Tham & Videgård, is by far the most popular choice. 

The Mirrorcube is covered in reflective glass, so it blends into its forest surroundings. This is ­luxury ­nature tourism: Inside the shiny box, you’ll find a ­living room with a double bed and bathroom. The ­hotel’s ­sauna is nearby. And if you covet a cube of your own, good news: A do-it-yourself version recently went on the market. It would definitely brighten up the ­backyard. | Find out more: treehotel.se

Print this article
More of Today's Solutions

New method uses sound waves to map soil health, stop famine, and restore farm...

BY THE OPTIMIST DAILY EDITORIAL TEAM Across the world, soil scientists are trading in their shovels for something unexpected: seismic sensors. In a breakthrough ...

Read More

This simple 15-minute mindset exercise can ease anxiety, science shows

BY THE OPTIMIST DAILY EDITORIAL TEAM A growing body of research is revealing how a short, simple activity that is done in just 15 ...

Read More

3 habits of the happiest people

Think of the happiest people you know. Do you find yourself often wondering what they are doing to maintain a general level of joy? ...

Read More

Changemakers of the week: GRuB and SparkNJ

Every day on the Optimist Daily, we report on solutions from around the world. Though we love solutions big and small, the ones that ...

Read More