Daedalus's Workshop is the workshop Daedalus used to work in.
Percy, Annabeth, Grover, Rachel and Tyson explore the Labyrinth until they find it. It is presumably destroyed with the rest of the Labyrinth when Daedalus died. It contains many laptop computers and easels with blueprints for his ideas and contained various pieces of art. It also contained four (improved and modified) versions of the set of wings Daedalus and Icarus used to escape Minos.
The location of the workshop would shift around the Labyrinth, but its favorite place was the Garden of the Gods. The workshop was destroyed along with the rest of the Labyrinth due to Daedalus's death after the Battle of the Labyrinth.