→ The Calligraphy Panels — The large panels of calligraphy on the four iwans are meticulously measured stone inlay, not paint. The letters are graded in size — the upper letters are larger than the lower ones so they appear equal when viewed from the ground, an optical correction used centuries before modern understanding of perspective.

→ The Missing Crown — The finial atop the main dome was originally made of solid gold. It was replaced with a bronze copy by the British in the 19th century. The original gold was melted down during the colonial period.

→ The River Axis — The Taj is positioned so that the Yamuna River serves as a natural mirror. The entire complex was designed around the principle of hasht bihisht (eight paradises), with the central chamber representing the throne of God in Islamic cosmology.

→ The Inlay Mastery — The walls of the Diwan-i-Khas feature pietra dura (stone inlay) work using semi-precious stones: lapis lazuli from Afghanistan, jade from China, and coral from the Red Sea. Each petal of the floral patterns was carved from a single piece of stone.

→ The Jehangir’s Chain — Outside the fort’s Delhi Gate, the remnants of a chain with 60 bells once hung. Any citizen could pull the chain to ring the bells and request a personal audience with Emperor Jehangir, bypassing all court officials.

→ The Carved Tree Pillar — In the Diwan-i-Khas, a central stone pillar with a carved tree-like capital supports the entire ceiling. The brackets are carved as 36 serpentine loops, each with a different pattern, representing the diversity of Akbar’s empire united under a single canopy.

→ The Saint’s Tomb — The white marble tomb of Salim Chishti inside the Jama Masjid courtyard is still a pilgrimage site. Devotees tie threads to the marble lattice screens as offerings, a tradition that has continued uninterrupted for over 400 years.