The third building on Kuybyshev Street is a monument of culture and architecture of regional significance. It is often called Badigin House in honor of the famous polar explorer, although in pre-revolutionary Penza, his grandfather, Konstantin Sergeyevich, was more well-known.

Konstantin Sergeyevich worked as an eye surgeon at the Provincial Zemstvo Hospital and was considered one of the best specialists not only in Penza but throughout the Volga region. Patients came to him for treatment even from Simbirsk, Ufa, Saratov, and Kazan. In 1905, he set a regional record by performing 5,000 cataract surgeries over 10 years. He enthusiastically fitted glasses for farmers and ordinary townspeople. In any weather, whether it was mud, slush, frost, or snowstorms, he hurried to the villages to provide medical assistance.

On weekdays, Konstantin Sergeyevich accepted low-income patients for free and on his own initiative at the clinic. Penza peasant women especially sought to see him, as he was also a gynecologist and considered one of the best specialists in this field. In the early 20th century, there was even a saying among the women of Penza: "If you want to give birth well, go to Doctor Chekarleysky." The nickname is associated with the village of Chekarley, the doctor's birthplace.

As a public figure, he ran for the State Duma in 1907 but lost the election to a candidate from the Socialist Revolutionary Party. There is a known case where, defending wrongfully convicted peasants, he paid out of his own pocket to invite a jurist from St. Petersburg, who freed them from prison, where they had been for a year. Konstantin Sergeyevich also donated money for the construction of a reading hut and a rural school.

Badigin House on Upper Peshaya Street was always full of sick patients who he received there. "Liza, we need to feed these Mordvins and let them stay overnight," he would say to his wife Konstantin Andreyevich. Such was this court councilor and doctor of the provincial zemstvo hospital.