While precious summer hours are slowly ticking away, fall-like weather may be nice enough to get outside on the weekends for weeks yet. In case you weren't paying attention, fall returns on Sept. 22.

Thailand is often celebrated for its beaches and islands, but beyond the coastline lies another world filled with dense jungles, dramatic limestone caves, mountain trails, and breathtaking waterfalls.

Arizona caves and waterfalls are equally awe-inspiring natural wonders, and this road trip leads you to some of the best of each that Arizona has to offer. The entire route is just shy of 550 miles, ...