How to search for the old Hyde Park Corner station entrance

The old Hyde Park Corner station building, nowadays converted into a pizza restaurant is just 30-60 seconds from the modern subway entrance. It is in City of Westminster, central London. The old entrance closed in 1932 after just 26 years in service between 1906-1932. The pizza restaurant it's been converted to is called "The Wellesley" and the only clue for a former station to be there on the station entrance itself is the terracota-red design on the outside like most Piccadilly line abandoned stations.