gawk at (someone or something)
To stare at someone or something in surprise or stupefaction. We gawked at the firemen as they rushed into the burning building. I could only gawk at Mary when she told me she was pregnant.
gawk at someone or something
to stare at someone or something, obviously and awkwardly. Why are you standing there, gawking at me? The tourists stood at the foot of the mountain and gawked at the top.