Yes, the world is round. If the technology in photographs were not available, I don't believe that anyone would believe it. The proof, however, is in the pictures as well as science. The rotations of day and night and the seasons also support the fact that the world is round and we are still able to hang on with out falling off.
Appearances can be deceiving. Planet Earth is not perfectly round. Isaac Newton first proposed that Earth was not perfectly round. He came into conclusion that it was an oblate spheroid—a sphere that is squashed at its poles and swollen at the equator. He was correct. However Earth is not even a perfect oblate spheroid, because mass is distributed unevenly within the planet.