Visit San Marino

The world's smallest state holds its biggest art: St Peter's, the Vatican Museums and the Sistine ceiling

Visit Monaco, the second-smallest sovereign state in the world. Explore the Prince's Palace (official residence of the Grimaldi family with daily changing of the guard), try your luck at the Casino de Monte-Carlo (iconic Belle Époque building featured in James Bond films), and stroll through the Jardin Exotique (botanical garden perched on cliffs with over 1,000 succulent plants).

Visit Luxembourg, a small landlocked country in Western Europe. Explore the UNESCO-listed Old Town of Luxembourg City with its fortifications and casemates, see the Grand Ducal Palace (official residence of the Grand Duke), walk across the Pont Adolphe (a stone arch bridge offering views of the Pétrusse Valley), and try local dishes like judd mat gaardebounen (smoked pork with broad beans) or gromperekichelcher (potato fritters).

Decode megalithic temples, honey-stone harbors, and sunlit coves of Malta

Hike alpine ridges, riverside trails, and storybook capital of Liechtenstein

Ski Pyrenean slopes, hike high lakes, and wander alpine villages of Andorra

Visit Singapore, a vibrant city-state in Southeast Asia. Explore Gardens by the Bay (futuristic Supertree Grove and Cloud Forest dome), shop and dine at Marina Bay Sands (iconic integrated resort with rooftop infinity pool), sample local dishes like Hainanese chicken rice at Maxwell Food Centre, and stroll through Chinatown (historic shophouses and Buddha Tooth Relic Temple).

Visit Macau, a Special Administrative Region of China known for its unique blend of Portuguese and Chinese heritage. Explore the Ruins of St. Paul's (the iconic facade of a 17th-century church), try Macanese egg tarts (a famous pastry with a flaky crust and creamy filling), and see the Grand Lisboa Casino (a landmark hotel and casino with a lotus-shaped design).