This prominent landmark on the east bank of the Vistula was constructed for the Euro 2012 football championships on the site of a defunct communist-era stadium. Its red-and-white patterning references the Polish flag, and the interior can seat 58,000 spectators for either sporting or entertainment events. Visitors can access an observation point for a view of the interior, or join a daily tour in English; times vary, so check out the website for the day you prefer to go.