Is Sagittarius A* visible to the naked eye?

Sagittarius A* (pronounced "Sagittarius A-star", standard abbreviation Sgr A*) is a bright and very compact astronomical radio source at the center of the Milky Way Galaxy, near the border of the constellations Sagittarius and Scorpius. It is part of a larger astronomical feature known as Sagittarius A.

-=-

Sagittarius A is a complex radio source at the center of the Milky Way. It is located in the Sagittarius constellation, and is hidden from view at optical wavelengths by large clouds of cosmic dust in the spiral arms of the Milky Way.

-=-

30 seconds on wikipedia. Now, don't you feel foolish?

Occupying 867 square degrees and containing the most stars with known planets (16), Sagittarius is the largest constellation in the Southern Hemisphere and the 15th largest constellation overall. The constellation has many bright stars and is very visible with the naked eye.

As is the case with all of the Zodiac constellations, Sagittarius was recorded in the 2nd century by the Greek astronomer Ptolemy, and it is Latin for archer.

No. It is a black hole. But it's accretion disc isn't visible to the naked eye either. Not from Earth anyway. It's too dim and too far.