While exploring the Iceberg Lounge in the Carmine Falcone main story mission, you'll come across a large safe filled with money and a visible Red Brick.

LEGO Batman: Legacy of the Dark Knight includes redeem codes tied to official LEGO sets. Here’s every confirmed code reward, ...

In this guide, you learn where to find the Iceberg Lounge safe code in Lego Batman: Legacy of the Dark Knight, which you need obtain a red brick.