Vatican City & The Vatican Museums

Luxembourg, Liechtenstein, Monaco, San Marino, Singapore, Baarle-Hertog / Baarle-Nassau, Neutral Moresnet, Malta, Gibraltar. I love-love-love microstates, small nations and other quirks of geopolitical history. Primus inter pares is of course the Vatican or Vatican City in Rome. Last time I went, was in 2016, with Steve.