Bara Imambara is a grand structure built in the 18th century by Nawab Asaf-ud-Daula. This architectural marvel is also known as the Asfi Mosque and is one of the most prominent landmarks of Lucknow. In the morning, explore the Bhulbhulaiya labyrinth which has 1024 ways to reach the terrace. In the afternoon, visit the Rumi Darwaza nearby which is a beautiful example of Awadhi architecture. In the evening, head to the nearby Chowk market and indulge in some shopping for Chikankari work, jewelry and handicrafts.
The British Residency is a group of buildings that served as a British colonial government office during the 1857 war of independence in India. In the morning, explore the ruins and the museum which showcases the history of the siege. In the afternoon, visit the nearby La Martiniere College which is one of the oldest schools in the country. In the evening, head to Hazratganj market which is the commercial hub of the city and enjoy some street food.
Other attractions worth visiting in Lucknow are Chhota Imambara, Ambedkar Memorial Park, and Dilkusha Kothi. For day trips, you can visit Ayodhya which is around 3 hours from Lucknow and is the birthplace of Lord Rama. You can also visit the Nawabganj Bird Sanctuary which is around 35 km from Lucknow and is home to many rare species of birds.
To make the most of your trip, try out some of Lucknow's famous street food like Tunde ke kabab, golgappas, and kulfi. Lucknow is also famous for its Chikankari work which you can shop for in the local markets.