Visit Luxembourg

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 Vatican City, the world's smallest independent state and spiritual center of the Catholic Church. Explore St. Peter's Basilica (home to Michelangelo's Pietà and the dome offering panoramic views of Rome), marvel at the Sistine Chapel (featuring Michelangelo's iconic ceiling frescoes like The Creation of Adam), and wander through the Vatican Museums (housing ancient Roman sculptures and Renaissance art).

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 San Marino, the world's oldest republic founded in 301 AD. Explore the historic center of San Marino City, a UNESCO World Heritage site with medieval fortifications like the Three Towers (Guaita, Cesta, and Montale) offering panoramic views of the Italian countryside. See the Palazzo Pubblico (government building with Gothic architecture) and the Basilica di San Marino (neoclassical church housing relics of Saint Marinus).

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).

Visit Copenhagen, the capital of Denmark. Explore Tivoli Gardens (one of the world's oldest amusement parks with historic rides and gardens), see the Little Mermaid statue (iconic bronze sculpture inspired by Hans Christian Andersen's fairy tale), wander through Nyhavn (colorful 17th-century waterfront with historic ships and cafes), and visit the Round Tower (17th-century observatory offering panoramic city views).

Visit Dublin, capital of Ireland. Explore Trinity College (home to the Book of Kells, a 9th-century illuminated manuscript), stroll through Temple Bar (historic cultural quarter with pubs and live music), see St. Patrick's Cathedral (largest church in Ireland, founded in 1191), and tour the Guinness Storehouse (seven-story experience on the history of Ireland's famous stout).

Visit Athens, the historic capital of Greece. Explore the Acropolis (ancient citadel with the Parthenon temple, built in the 5th century BC), wander through the Plaka district (old neighborhood with narrow streets and traditional tavernas), see artifacts at the National Archaeological Museum (one of the world's greatest museums of ancient Greek art), and watch the changing of the guard at the Tomb of the Unknown Soldier in Syntagma Square.