The 2,100-square-metre Luxembourg Pavilion on the Expo 2020 site is encircled by a Mobius band, i.e. a surface with only one side and only one boundary curve. The imposing structure, which select media were given a tour of on May 31, was designed by Luxembourg-based architecture studio Metaform. Here’s a look at some lesser-known elements of the pavilion in the Opportunity District.