1 Paris Street Exeter EX1 1GA Underground Passages - Exeter City CouncilDating from the 14th century, the medieval passages under Exeter High Street are a unique ancient monument. No similar system of passages can be explored by the public elsewhere in BritainIntroduction Booking is advised for tours of the Underground Passages - we are usually extremely during weekends and school holidays. Online booking is now available. For general questions and queries, please contact us through our Contact Us form or https://exeter.gov.uk/leisure-and-culture/our-attractions/underground-passages/