The interior at the Trade House of Lang dates back to different decades of the 19th century. The Lang premises have been renovated in culturally and historically valuable buildings, the Lang Main building and the Lang Lower Mansion, as well as sauna facilities on the Captain Himanka's courtyard. Different-sized spaces are well suited for different events.

Wi-Fi is available in all venues. The rooms are equipped with audio equipment, data projector, screen, Smart TV 60 ″, a flipchart and a Jabra Panacast conference speaker and camera system.