Adventure travel has exploded in popularity in recent years, and today it’s easier than ever to explore the highest peaks and most remote corners of the globe. Whether you’re looking for an individualized journey, eco-friendly group tour or multi-generational trip, these 20 travel companies can help. Vote for your favorite adventure tour company once per day until polls close on Monday, May 20 at noon ET. The 10 winning tour companies will be announced on Friday, May 31. Read the official Readers’ Choice rules here.