However , Firoz 's buildings were of simpler designs than those built earlier by the Khaljis .
Firoz Shah Tughluq has contributed to architecture in a similar manner as Shah Jahan did years later .
Firoz 's buildings were of simpler designs than those built earlier by the Khaljis .
Firoz Shah Tughluq has contributed to architecture in a similar manner as Shah Jahan did years later .