The Secret Service Entrance is a historical escape room on the top floor of Het Palthe Huis, the 17th-century merchant house of Museum Oldenzaal — the historic building itself is the setting. The story is set in 1980, at the height of the Cold War: as secret agents, players unravel a chain of mysteries in the struggle fought behind the scenes by spies and submarines. The room is a citizen initiative involving Beeldbouw, AssortiMens, the University of Twente and Oldenzaal museums, which explains the low fixed group price of €60; booking is only possible by email with 48 hours' notice. To be honest, the online review base is virtually non-existent — no escapetalk mention or quotable player reviews — though recurring Social Deal promotions point to steady local demand. Note: the room is accessible by a steep staircase and is therefore not wheelchair accessible.