1. The Tomb of I’timad-ud-Daulah is also known as the \"Baby Taj\". It was built between 1622-1628 by Empress Nur Jahan, in memory of her father. This monument is considered to be a precursor to the Taj Mahal due to its architectural style and use of precious stones and marble. It is located on the right bank of the river Yamuna.

The tomb structure is made of white marble and features Indo-Islamic architecture. The use of intricate carvings, latticework, and inlaid stones, including semi-precious stones like onyx and lapis lazuli, make it a visually stunning monument.

2. The working time of the Tomb of I’timad-ud-Daulah is from sunrise to sunset. The phone number for any queries may be found on the official website of the Archaeological Survey of India.

3. The entry fee for the tomb is INR 40 for Indian nationals and INR 510 for foreign nationals. The nearest transportation options are local buses, taxis, and auto-rickshaws. Railway stations and airports are also accessible from the tomb. Agra is the nearest major city, located about 210 km away from New Delhi. There are also guided tours available in the vicinity of the tomb.