Hola Mohalla festival starts few days before Holi and concluded on Holi day. Whole Anandpur saheb and it's Gurudwara is decorated. Throughout the fair, lot of folks visit the town and visit Gurudwara. During evening, lot of action happens. Nihang groups from different parts of the wordl show their skills. You should check above link to know more about action at Anandpur Saheb during Hola Mohalla.
Lathmar holi of Nandgaon is very popular which takes places a week before the day of Holi festival. Ladies of the village come with sticks in their hands and beat men. Men have shields to protect. Photographs of Lathmar can explain it better. Few days before Lathmar, Laddoo holi takes place when sweets are thrown and religious songs are sung. One needs to visit Nandgaon to witness the crazy holi with unimaginable amount of colors.
Holi is celebrated in big way around Mathura and Vrindavan. Almost every temple celebrates it and preparations start weeks before the main day of celebration. Huge procession happens on Holi day when people walk from one temple to another and sing Radha-Krishna songs.
In Udaipur, Holi is celebrated by royal family with Holica dahan on Holi eve. For regal experience, join in the celebration of Udaipur's Mewar royal family. Usually there is huge palace procession from the royal residence to Manek Chowk at the City Palace. This procession includes bedecked horses and royal band. Later the traditional sacred fire is lit and an effigy of Holika burnt. I am yet to experience Udaipur Holi and bring photographs through my Travellingcamera.
On Holi eve Elephant procession happens in the city. Various activities like Elephant dress-up, folk dance and various other events happen. Locals and foreigners participate with huge enthusiast. Most of these celebrations are worth witnessing and photographing.