1. The inside of the Leaning Tower of Pisa is...underwhelming:

2. This ol' lumpy thing is the ball used in the 1930 World Cup final:

3. The first Superbowl didn't sell out — you can see several empty seats in pictures from that day:

4. Circulated money gets worn out really quick:

5. Deep scars don't sweat and so dirt doesn't stick to them:
