3. Denver, Colorado
Things to do: Visit Denver Botanic Gardens, try The Spa at The Brown Palace, couple cooking classes, experience fine dining in Vesta
Ignore the Denver Airport conspiracy theories for just a weekend so you can enjoy some romantic time. For those interested in picnics, you can enjoy that in the Denver Botanic Gardens. Prime relaxation exists at the spa at The Brown Palace. Denver, one of the best places to visit in the USA for couples for a weekend, also boasts a lot of romantic restaurants, like Vesta, which has fine wine and steaks. Try a horse-drawn carriage ride, too. You might as well.