The permanent diplomatic mission of the Kingdom of Spain to the Holy See was established 400 years ago, and is therefore the oldest in the world still in existence. Cardinal Pietro Parolin, the Pope’s Secretary of State, presided over a Mass this past October 12 to celebrate the 400th anniversary of the establishment of the Spanish Embassy in the Vatican, the oldest embassy in the world. (https://aleteia.org/2022/10/14/the-oldest-embassy-in-the-world-turns-400/) The Spanish Embassy still sits today in the Monaldeschi Palace, also known as the Palace of Spain (Palazzo di Spagna). Until 1622, the Spanish ambassador did not have a permanent residence. He chose to establish it on a square located in the heart of Rome which, in homage, was later baptized Spain Square, Piazza di Spagna. The Square is today a tourist hot spot.