From a bucket-list Southwest tour to iconic New York landmarks, these are the traveler-approved things to do right now.Sunset over Horseshoe Bend in Page, Arizona.Credit: Smartshots International/Getty ImagesWith striking rust-red walls and otherworldly rock formations, there's nothing quite like a visit to Arizona's Lower Antelope Canyon and Horseshoe Bend. And this year, it was also named the No. 1 experience in the United States.The honor, be…