'Vishnu Pada' (विष्णुपद) or 'Vishnu Charan' (विष्णुचरण) temples are significant in context of the legend that Vishnu in the form of Vamana strode across the world and planted his feet at three sites on earth.
Dr. Gustave Le Bon Here is the photograph of the Vishnu footprint slab from Dr. Gustave le Bon's book. The slab had survived at least until 1893 at the Humayun Tomb site. The photograph was captioned in the French version and then translated into English in 'The World of Ancient India' as 'Vishnu's Footprints at Humayun Tomb'.
|Vishnu's Footprints photographed at the Humayun Tomb|
by Le Bon for his book 'Les Monuments de L'Inde'
|Above is the caption from the English version of Le Bon's book|
titled 'The World of Ancient India'
There are other indications that the Humayun Tomb was constructed by the Moghuls on the site of an ancient Hindu temple.
Ancient Temple Pillars were used as construction material.
A view of Humayun Tomb's rampart.
|Another view of the pillars taken from destructed Hindu Temples|
and used for construction of Humayun Tomb. In the background
is a section of a typical Moghul fortress wall at the Isa Khan Tomb
within the Humayun Tomb Complex.
|Notice the 'elephant head' engravings at the bottom of the pillar -|
a characteristic of Vedic and Hindu art.
|A closer view of a less eroded |
'elephant head' engraving.
|Ancient Temple Pillars were used as construction material at Humayun Tomb.|
Notice that the pillars were placed upside down in this 'canopy structure'
by the artisans in Moghul times.
|Eroded engravings on Temple Pillars which were used for construction|
of tomb of Isa Khan at the Humayun Tomb Complex indicates that they belong to a different era.