One of America’s oldest and most beautiful cities, SANTA FE was founded by Spanish adventurers and missionaries a decade before the Pilgrims reached Plymouth Rock. Spread across a high plateau at the foot of the stunning Sangre de Cristo mountains, New Mexico’s capital still glories in the adobe houses and baroque churches of its original architects, while its newer museums and galleries attract art-lovers from all over the world. The busiest season is summer, when temperatures usually reach into the eighties Fahrenheit; in winter, the average daytime high is a mere 42°F, though with snow on the mountains the city looks more ravishing than ever.