The Doncov-Lopatins' House is an important architectural monument from the first half of the 19th century. It is one of the most beautiful buildings in Yaroslavl, located at the intersection of Bolshaya Oktyabrskaya and Sobinov streets. There are not many architectural works of such high quality from this period in the city. Yaroslavl is known for its church architecture of the 17th century and noble estates of the 18th century. However, ornate buildings in the classical style with influences of baroque and rococo are rare here. The merchant mansion of the Lopatins is a fortunate exception. It was built in the early 19th century with the funds of the famous Yaroslavl merchant Lopatins, who owned trading shops selling the finest textiles and haberdashery. Lopatins left a significant fortune to their descendants, which they increased by entering the confectionery business. The I.S. Lopatins' confectionery was famous for its delicious pastila, gingerbread, jams, and fruits in sugar. The financial situation of the merchants allowed them to live lavishly, hosting dinners, balls, and receptions in their family mansion. Initially, the mansion was built in a strict classical style with clear lines, symmetrical proportions, and restrained decorations on the facades. Later, the house took on a more ornate appearance. In the late 19th century, the owners decided to reconstruct the building, merging it with the neighboring Doncov house, which led to a loss of symmetry. However, the changes did not stop there: the owners adorned the mansion in the rococo style. The window openings and parapet of the building were richly decorated with stucco, presumably crafted by local artisans. Small towers with stucco vases, connected by wrought iron grilles, give the building a special lightness. The corner balcony with a single double window is an interesting architectural solution. Today, this beautiful building houses the House of Culture for Education Workers, whose administration monitors its condition, preserving one of Yaroslavl's most vibrant landmarks in excellent condition.