Tehran's Tajrish Bazaar with its shrine, Christmas trees, and shopping for the Winter Solstice festival is a vignette of plurality of traditions at this time of year.

The old bazaar in the affluent northern Tehran is very popular with people from every walk of life. The busy Shiite shrine of Emamzadeh Saleh in one of the narrow passages of the bazaar is nestled among shops with massive displays of pomegranates, watermelons and nuts - staples for the celebration of the pre-Islamic Winter Solstice festival – and not far from it, Christmas trees and decorations catch the eye.

But it's not only the bazaar that looks Christmassy. "You wonder if this is really Tehran or a street in Europe when you walk in the streets of Tehran these days and look at shops. Shops are filled with Christmas trees and Santa Clauses. Street vendors are also selling Christmas trees and decorations everywhere in the city," Didar News wrote.

This winter, Tehranis alone paid over 60 billion rials (over $200,000) for Christmas trees. According to Didar News, 90 percent of the trees were purchased by non-Christians -- that is, Iranian Muslims -- who in the past twenty years have also been celebrating western festivals such as Halloween and Valentine's Day. Fresh pines this year sold for around five million rials while small artificial trees cost around a million.

There are around 120,000 Armenian and Assyro-Chaldean Christians in Iran. Unlike converts to Christianity, they enjoy some degree of freedom of worship and have their own representatives in the parliament.

Iranian Armenians celebrate Christmas on January 6 and cook herbed rice and pan-fried fish , the same dish as other Iranians make for the Nowrouz festival, and make traditional Armenian sweets such as perog and gata loaves.

Earlier this week Iranians sent each other millions of text messages to congratulate the Winter Solstice festival (known as Yalda or Chelleh Night) just as they do on the ancient Iranian New Year, the birthday of the Prophet Muhammad, and increasingly more in recent years, Christmas and western New Year.

The celebration of Yalda on the night of Winter Solstice and the Iranian New Year (Nowrouz) on the day of Spring Equinox both date back to ancient, pre-Islamic times. The non-Islamic Nowrouz is still the main calendar event for most Iranians. The strength of the Nowrouz tradition is such that even the Supreme Leader Ali Khamenei makes a televised speech on the day.

Iran's religious establishment and hardliners often refer to such festivals, especially the Winter Solstice festival as "pagan" calendar events. They call on people not to celebrate such festivals and sometimes even call for banning them. But ancient traditions appear to have gained more popularity since the 1979 Islamic Revolution despite non-stop religious propaganda.

Many other Iranians think that celebrating pre-Islamic festivals is not against their Islamic beliefs and adopting other traditions such as Christmas is fine, as long as it is not at the cost of Iranian traditions such as Nowrouz.

"Different groups of people may feel they don't belong to their homeland if selling Christmas trees and Yalda food at Tajrish Bazaar is banned or if the Shrine of Emamzadeh Saleh is shut down to pilgrims. Feeling a stranger in one's homeland will breed anger and hate," a commentary in the moderate conservative Asr-e Iran website said Wednesday. "One can proudly say that in the Iranian society the Islamic, Western, and ancient Iranian cultures have somehow reached co-existence even though the government does not approve of it."