Despite its location far in the Southern Hemisphere, the constellation of the Southern Cross is visible to those located in the Northern Hemisphere, as long as you are far enough south and know just when to look.
The Sickle in Leo is an easy-to-spot backward question mark shape made of stars that marks the head and shoulders of the constellation of the lion. The moon sometimes passes in front of the Sickle's brightest star, Regulus.
From the Northern Hemisphere, a fairly bright North Star marks the direction north. But there's no bright star marking the direction south, as seen from the Southern Hemisphere. Instead, the Southern Cross points the way.