Rome

Rome is the Eternal City — 3,000 years of continuous civilization layered so densely that ancient ruins share city blocks with Renaissance churches, Baroque piazzas, and neighborhoods where modern Romans eat the same recipes their great-grandparents perfected. Nowhere else on earth is the weight of history so physically present: you can run your hand along Aurelian Wall stones laid in 275 AD, stand in a forum where Cicero argued cases before Caesar watched, and eat cacio e pepe in a trattoria serving the same dish its great-grandfather's trattoria served. The Vatican is the world's smallest nation and home to Michelangelo's Sistine Chapel ceiling — one of the few artistic achievements that genuinely exceeds its reputation. The Colosseum held 80,000 spectators when London was a Roman outpost. The Pantheon has been in continuous use for nearly 2,000 years and its dome remains one of the engineering marvels of any century. Outside the monuments, Rome is intensely livable: neighborhood markets burst with seasonal produce, neighborhood trattorias serve hand-rolled pasta and braised oxtail, and the evening passeggiata along the Tiber makes you understand why Romans have always believed their city to be the center of the world. Come in spring or autumn — the city rewards the curious traveler who wanders without agenda.