The Old Town in Aarhus, Denmark (Danish: Den Gamle By), is an open-air town museum located in the Aarhus Botanical Gardens. It consists of 75 historical buildings collected from 20 townships in all parts of the country. In 1914 the museum opened as the world’s first open-air museum of its kind, concentrating on town culture rather than village culture, and to this day it remains one of just a few top rated Danish museums outside Copenhagen serving some 3.5 million visitors pr. year.

The museum buildings are organized into a small town of chiefly half-timbered structures originally erected between 1550 and the late 19th century in various parts of the country and later moved to Aarhus during the 20th century. In all there are some 27 rooms, chambers or kitchens, 34 workshops, 10 groceries or shops, 5 historical gardens, a post office, a customs office, a school and a theatre.

The town itself is the main attraction but most buildings are open for visitors; rooms are either decorated in the original historical style or organized into larger exhibits of which there are 5 regular with varying themes. There are several groceries, diners and workshops spread throughout the town with museum staff working in the roles of town figures i.e. merchant, blacksmith etc. adding to the illusion of a “living” town.