Agra
The Taj Mahal, described as the most extravagant monument ever built for love, has become the de facto tourist emblem of India. This poignant Moghul mausoleum was constructed by Emperor Shah Jahan in memory of his second wife Mumtaz Mahal, whose death in childbirth in 1631 left the emperor so heartbroken that his hair is said to have turned grey overnight. Construction of the Taj began in the same year and was not completed until 1653.

The emperor's hair may have gone shabby but his eye for detail apparently remained acute - the near-perfection of the Taj's architecture does not diminish upon closer inspection; it merely comes into sharper focus. Semiprecious stones were laid into the marble in elaborate designs through a process called pietra dura. If you're planning to check out this marvel, don't forget that it's closed on Friday to all non-Muslims.

The city's other major attraction is the massive red sandstone Agra Fort, also on the bank of the Yamuna River. The auricular fort's colossal double walls rise over 20m (65ft) in height and measure 2.5km (1.55mi) in circumference. They are encircled by a fetid moat and contain a maze of superb halls, mosques, chambers and gardens which form a small city within a city. Unfortunately not all buildings are open to visitors, including the white marble Pearl Mosque, regarded by some as the most beautiful mosque in India.

Other worthwhile Moghul gems include the Itimad-ud-daulah, many of whose design elements were used in the construction of the Taj, and Akbar's Mausoleum at Sikandra which blends Islamic, Hindu, Buddhist, Jain and Christian motifs, much like the syncretic religious philosophy Akbar developed attempted to do.

Agra is near enough to Delhi - 200km (125mi) - to be done as a day trip. It's on the major tourist circuit so you can take your pick of transport; plane, bus, or train.