Constantia House is just one of the landmarks located 1.5 mi (2.4 km) from central Lucknow, so you might want to stop by for a few pics during your trip.
If you like quiet time surrounded by flowers and greenery, hang out at Ambedkar Memorial Park in Gomti Nagar. Want to stretch your legs some more? Head to Botanical Gardens and Kukrail Forest Reserve, both nearby.