1. Madero Tango: See the River Fireworks as a Guest
The only listed fireworks for New Year's Eve 2026-2027 are advertised as part of Madero Tango's paid event in Puerto Madero. The show includes a tango performance, midnight toast, DJ party until dawn, and breakfast. Its riverside setting makes this the clearest option if fireworks are your priority, but the listing does not describe separate public viewing access. Puerto Madero's waterfront has restaurants and hotels nearby, so staying in the area can make the trip back easier.