I am a historic stadium that has hosted both Summer Olympics and FIFA World Cup matches, but not in the same year. I've also seen legendary musical performances, and a former Pope celebrated mass within my walls. My architecture is unique, featuring a distinctive tower and a mix of modern and classic design elements. Which stadium am I?

1. I was built in the 1930s, but have undergone multiple renovations.
2. My location is close to a large body of water, and an important cultural center.
3. I’m the home of a famous football club, and have also hosted Rugby.
4. My tower is a well-known landmark in the city.