No one wants to go to a new destination and miss the best—but perhaps little known—attraction of the location. Similarly, no one wants to make an easily avoidable mistake when traveling to a destination that he or she is unfamiliar with. Or to get to a new place, only to learn that the coveted activity they wanted to partake in is sold out or has to be booked in advance. That’s why travelers research and plan before we embark on our trips. But what are the best places to get advice on the must-do activities or the must-see architecture? Here are five top resources for travel advice.