The talk show invites guests with differing viewpoints on current events.
Traveling helps one appreciate the viewpoints of people living in other parts of the world.
Sally gets angry with people who don't share her viewpoint on politics.
The nations have come to share a common viewpoint on this global problem.
WordNet 3.0 Sense Numbers: 1
NOTE: can also use temporal locations as a figurative extension
From our viewpoint on the ridge we could see the whole valley below us.
The road has signs along the way indicating scenic viewpoints.
From the viewpoint of the spacecraft, the earth appeared as a blue-green marble.
From the viewpoint of two decades later, that public policy looks unwise. (figurative extension - refers to a temporal 'lookout' point)
WordNet 3.0 Sense Numbers: 2