Pittsburgh, Pennsylvania

Steel City has plenty of free or affordable things to do so travelers can bump their budget even more this summer. Enjoy the epic view from Mount Washington, tour the Frick Museum of Art (admission is free), and see Pittsburgh's oldest remaining building at the Fort Pitt Blockhouse at Point State Park at the famous confluence are just a few of the exciting and free activities awaiting.

Oklahoma City, Oklahoma

Oklahoma City is the ninth-best summer travel destination in the United States by 2021, according to WalletHub, ranking second among the nation's 100 largest metropolitan areas for domestic costs and 25th in travel costs. America Budget-Friendly  Destinations. The first category takes into account the cost of living, as well as the lowest price per night for a three-star hotel room and the average price of a meal for two. A tour of the newly renovated Oklahoma City National Memorial Museum will cost you the equivalent of a movie ticket, but that's not all you can do on the cheap at the Horse Shows Capital of the World.

 Phoenix, Arizona

For travelers who don't mind a hot summer in Phoenix, Valley of the Sun offers many exciting experiences that won't break the budget, including air-conditioned fun at many of the city's museums on free admission days. While visitors will also find plenty of entertainment and convenience when visiting Phoenix's restaurants and nightlife, outdoor adventures stand out here, as there's no shortage of amazing trails to explore with hikers, runners, and mountain bikers. Stunning views and even ancient rock carvings.

Orlando, Florida

The Capital of the World theme park won't be without its crowds this summer, as it remains one of America's most popular vacation spots, especially with families. However, it ranks as the #1 summer travel destination for 2021, according to WalletHub research. Orlando ranks first in activities, second in attractions, third in domestic costs, and 24th in travel and inconvenience costs, which takes into account flight costs, connection options, and rate of delay.

Indianapolis, Indiana

Indianapolis is another budget vacation travel destination in the Midwest, offering more than 200 city parks, an eight-mile cultural trail, many Instagrammable murals, free admission days to top museums and attractions, the not-to-miss Monument Circle and exciting event-appropriate for the family in White River State Park.

Knoxville, Tennessee

Located on the doorstep of the Great Smoky Mountains in eastern Tennessee between Nashville and Charlotte, Knoxville has the fourth lowest local cost nationally, according to WalletHub. In addition to affordable hotel stays and inexpensive activities, travelers can expect a variety of free experiences, including the Eggs Nature Center, numerous museums and art galleries, attractive botanical gardens, and farmers' markets

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