When the Yokohama Triennale opened a couple of weeks ago, several people asked which of the pieces I particularly liked. When pressed, from the works of more than 100 artists on show, I singled out Yoko Ono's "Freight Train" and Casagrande & Rintala's "Bird Cage," two large outdoor installations located in bayside parkland behind the Red Brick Warehouse No. 1.

Yoko Ono's "Freight Train," a 1940s German freight car

When I made my second visit to the Triennale, I almost missed the last Tokyo train when I lost track of time, transfixed for hours by the spectacle of defiant light that is "Freight Train" by night.