What is the only defect in Tajmahal?

The only defect in the Taj Mahal is often cited as the slight tilt of its dome, which can be attributed to the foundation settling over time. Additionally, there are minor imperfections in the symmetry of the structure, which some believe were intentional to avoid the notion of perfection, as it is often associated with divinity. Despite these flaws, the Taj Mahal remains an architectural marvel and a UNESCO World Heritage Site.