Their trade flourished, and within a few years, they purchased a market stall at the edge of Tampere's Central Square in the Pillar Shops.

In 1901, the old wooden shop building was replaced with the Art Nouveau-style, three-story Tirkkonen House at the corner of Kuninkaankatu and Kauppakatu.

[6] Nikolai Tirkkonen also began offering mail-order sales for his store's products, an idea he had borrowed from abroad.

The funds were used to construct the large Näsikallio Fountain, completed in 1913 on the southern slope of Mustanlahti Hill at the north end of Hämeenpuisto.

The fountain's three bronze sculptures were created by sculptor Emil Wikström, and the granite structures were designed by architect Birger Federley.