We are sailing in southern waters for the Geo Quiz.
Two large international cruise liners have been turned away from Argentina's southern port.
The ships were denied entry having been in the Falkland Islands two days earlier.
This port city in Tierra Del Fuego is sometimes called the southernmost city in the world.
It looks out on the Beagle Channel, named after the HMS Beagle, whose most famous passenger was Charles Darwin.
The cruise ships, the Adonia, and the Star Princess have been forced to sail on to their next port of call at Punta Arenas, Chile.
the Argentine port of Ushuaia is the answer to the Geo Quiz.
Anchor Lisa Mullins talks to Sue Bryant, contributing editor for Cruise Critic, an online site for cruise ship news.