Iceland
Iceland
Waterfalls, black sand and geothermal water, all within a day's drive of the airport. Stay 4–5 days for the south, 8–10 for the ring road.
The hardest month to travel well in the northern hemisphere. Go north, go high, or go somewhere whose season this actually is.
Southern Europe in July is hot and expensive. Iceland, the Canadian Rockies and Japan's northern islands are the sensible answers.