The survey compared hotel rates for all destinations in the USA for this summer's main travel period of July 1 to August 31. The rankings were determined based on the average cost of each location's cheapest available double room. As such, the prices mentioned reflect the minimum amount travelers will have to spend to stay at a certain destination. Only those hotels rated two stars or higher were considered for the survey. Visitors to Provincetown will have to spend, on average, $217 per night for a double room. That figure makes the coastal Massachusetts city the country's most expensive destination. Coming in as second most expensive is New Jersey's Cape May with an average price of $204 per night. Following closely in the number three spot is Martha's Vineyard, which is located close to Provincetown in southern Cape Cod. The most affordable double room in Martha's Vineyard is averaging $202 nightly this summer. The following table shows the 10 most expensive destinations in the USA. The prices shown reflect the average rate for each destination's cheapest available double room for the time period spanning July 1 through August 31, 2013. 1. Provincetown (Massachusetts) $217 2. Cape May (New Jersey) $204 3. Martha's Vineyard (Massachusetts) $202 4. Santa Monica (California) $199 5. Old Orchard Beach (Maine) $192 6. Calistoga (California) $186 7. Kennebunkport (Maine) $184 8. Ogunquit (Maine) $183 9. Poipu (Hawaii) $176 10. Boston (Massachusetts) $175