Aboard Italy's floating pavilion at this year's United Nations Climate Change Conference (COP30) in Belém, Brazil, delegates may experience a "surreal," perspective-altering encounter with the water. As they descend the sloped perimeter of the 4,300-square-foot steel platform called "AquaPraça" ("water plaza" in Portuguese), visitors will find themselves eye-level with the brackish, muddy currents of the Pará River in the Amazon Delta region, a gateway to the Atlantic Ocean, and with concerns about sea-level rise.