The Great Exhibition

The Great Exhibition — formally the Great Exhibition of Works of Industry of all Nations — was a grand London event held in 1851, and based in a purpose-built venue called the Crystal Palace. The Fifth Doctor wanted to take Tegan and Nyssa there as "a treat" in the wake of Adric's death, but instead ended up on the tarmac of Heathrow Airport. (DW: Time-Flight) The Eighth Doctor would later take Charley and C'rizz there, soon after they left the Divergent Universe. (BFA: Other Lives)