There are many constellations visible only in the Southern Hemisphere, but one of the most famous and easily recognizable is Crux, also known as the Southern Cross.

Here are a few other notable Southern Hemisphere constellations:

* Centaurus: Home to the brightest star in the night sky, Alpha Centauri.

* Carina: Contains the second brightest star in the sky, Canopus.

* Tucana: Hosts the Small Magellanic Cloud, a dwarf galaxy visible to the naked eye.

* Hydrus: A long, winding constellation shaped like a water snake.

* Pavo: A constellation named after the peacock.

It's worth noting that some constellations, like Ursa Major (the Big Dipper), are circumpolar and can be seen from both hemispheres, though they may appear in different orientations.