To celebrate the 257th anniversary of the birth of Marc Brunel — the brains behind the Thames Tunnel, the world’s first tunnel under a navigable river — we’re offering free entry to people named Marc or Mark on 25 April 2026 (also St Mark’s Day!).
To book your free ticket, prebook below using the code MARC1769.
Remember to bring a piece of ID with your name on when you visit!
Book Tickets