Absolutely! These cities are rich in culture, history, and spiritual significance. Here are some travel tips for your trip:

Best Time to Visit:
The best time to visit these northern Indian cities is during the cooler months of November to March. The climate during this period is pleasant for sightseeing. Avoid the summer months due to extreme heat.

Route and Accessibility:
All of these cities are well-connected by rail, road, and air to the major cities of India. Varanasi, Allahabad (Prayagraj), and Lucknow have their own airports. You can hire taxis or use public transport like buses and auto-rickshaws to move around in the cities.

Altitude and Acclimatization:
There's no need to worry about altitude sickness here, as these cities are located on the plains.

Accommodation and Booking:
There are various accommodation options available, from budget to luxury hotels. Booking in advance is always a good idea, especially during festival seasons when the cities attract large crowds.

Clothing and Essentials:
Carry light and comfortable clothing. Don't forget your sunglasses, hat, and sunscreen to protect from the sun. A light jacket or sweater might be needed for the winter months. Comfortable walking shoes are essential for sightseeing.

Health and Safety:
Keep yourself hydrated and avoid street food if you have a sensitive stomach. It's a good idea to have travel insurance in place. Follow COVID-19 safety guidelines.

Local Etiquette and Respect:
Respect local customs and traditions, especially at religious sites. Dress conservatively while visiting temples. Avoid taking photographs where it's not permitted. Hindi is the local language, but English is also widely understood and spoken.