The exhibition has toured throughout the world, including Paris, Buenos Aires, Cape Town, and Denver, and has permanent homes in Zagreb, Croatia, and Los Angeles. Anyone is invited to contribute their belongings, which gives visitors to the ever-growing museum a glimpse at the way culture subtly impacts the breakup process. Each exhibit of donated objects includes a title, the dates and length of the relationship it belongs to, and a story about it. The items range from the universal—defaced photos, hand-written notes, wedding dresses—to the wholly unique, such as the "ex axe" one man used to destroy his ex-girlfriend's furniture when she left him. Explore the science of heartbreak with the videos below.