Pencil drawing of architectural details by Thomas and William Daniell, from a set of 16 drawings of architectural details in North India made between 1786 and 1792. This drawing depicts the detail of the decoration of arches from the facade of the Taj Mahal at Agra, the famous mausoleum built by the emperor Shah Jahan for his wife Mumtaz Mahal, completed in 1643. The arches are decorated with floral motifs inlaid with pietra-dura. During seven years spent sketching in India, from 1786 to 1793, Thomas and William Daniell produced a large collection of working drawings that they later used for their aquatints and oil paintings. On their first tour in North India of 1788 to 1791, the artists set up from Calcutta and proceeded up the Ganges by budgerow visiting all the well-known places such as Bhagalpur, Patna, Ghazipur, Benares and Allahabad. From Cownpore they proceded by palanquin to Agra, Mathura and Delhi and visited the pilgrimage place of Hardwar. They were the first Europeans to reach the Himalayas. They returned through Rampur, Bareilly, Shahjehanpur and Lucknow and proceded by boat to Benares. After reaching Patna they returned to Calcutta by budgerow. Their arduous journeys are recorded in the pencil sketches and wash drawings that they made almost every day.