The phrase "at the viewpoint" is correct and usable in written English.
It can be used when referring to a specific location or perspective from which something is observed or considered.
Example: "We gathered at the viewpoint to admire the breathtaking scenery of the mountains."
Alternatives: "from the perspective" or "at the vantage point".
3. Once at the viewpoint, go on past the seat to the yellow marker post.
Couples can be seen canoodling close at the viewpoint over a stranded Greek ship, with no morality police in sight.
At the viewpoint over Peyto Lake, the mountains overlap in a stately ensemble, while their peaks, at 11 a.m., are lost in mist.
If any of the quarters you plug into the coin-operated binoculars at the viewpoint atop Cannon Mountain are New Hampshire state quarters, the Old Man is pictured there too.
The couple had a register office wedding but said they did not consider themselves married until their humanist ceremony at the viewpoint on Hengistbury Head, a headland near Bournemouth.
Standing at the viewpoint behind the house, overlooking the rugged coast, Mr. Dennis described the reaction of friends when he broke the news of his purchase: "' 'You must be mad,' they said".
I desired to seek all perspectives, but I was surprised at the viewpoints of retired cops.
No doubt the Commission has the noblest intentions, but, looked at from the viewpoint of the workers and the least advantaged people, it still has not answered the questions this Parliament has raised in many documents, for example, the report on the Green Paper entitled "Living and Working in the Information Society: People First".
But at the same time, if you look at this from the viewpoint of attracting the foreign investment necessary for growth – that has not happened.
Ms. Reitz also wrote "Menopause: A Positive Approach" (1977), considered one of the first books to look at menopause from the viewpoint of women and not doctors.
He says, "It's not fun to be, like, 'Fuck "Twilight"!' It's more interesting to come at it from the viewpoint of 'What?
