Pan Am’s terminal at JFK is hardly the only relic from the age before mass travel that’s passing. The Queens Building (pictured by A380spotter) at London’s Heathrow was demolished over the last year to make way for an expansion of Terminal 2.
One point about that particular building is that it hosted an observation deck:
On its roof were gardens and a viewing platform, which in 1956 became one of London’s most visited attractions. At one stage it attracted more visitors than Windsor Castle, Madame Tussauds and the Tower of London.