NBA defending champions the Miami Heat visited the US Holocaust Memorial Museum Monday for the second year in a row.

The team, including all stars LeBron James and Dwyane Wade, toured the DC museum, taking in exhibits like the notorious Nazi railcars and concentration camp barracks.

The Heat was in Washington to meet with President Barack Obama, an annual tradition for the reigning championship team. The decision to visit the Holocaust site was prompted by veteran player Ray Allen, who has made a point to visit the museum with teammates several times in the past.

“It’s important; it’s a matter of humanity,” he said. “Anytime I’ve had time in DC, I’ve taken my teams to the museum. When you see that, it gives you more compassion.”