Visitors to Washington, D.C. for the country’s 250th anniversary will have the opportunity to learn about Colorado’s natural beauty and culture during the Great American State Fair, a World’s Fair-style event that opened Thursday at the National Mall.

While all 56 U.S. states and territories will be represented in the fair, at least seven states have declined to send official representatives, with some citing costs and scheduling conflicts and others arguing the event has become more partisan than originally advertised.

A number of musicians, including Martina McBride and Bret Michaels, have pulled out of performances at the fair, saying they didn’t realize the political overtone of the event, according to The Associated Press.

President Donald Trump spoke to kick off the event on Wednesday and plans to host what he calls a “Trump Rally” at the National Mall on July 4.

Colorado’s exhibit will feature a copy of the state’s “Welcome to Colorful Colorado” sign, real coniferous trees, a ski lift and a feature inspired by Red Rocks Amphitheatre.

“Governor Polis is excited by any opportunity to show the rest of the country why Colorado is the best state to live, raise a family, and explore the great outdoors and what makes Colorado so beautiful and special,” said a spokesperson for Gov. Jared Polis. “Our state looks forward to showcasing Colorado at the Great American State Fair with an engaging, interactive experience with real Colorado pine trees from deep in our forests, giving visitors a taste of Colorado’s outdoors.”

The state has also included items in the America 250 time capsule, which will be buried at Independence National Historical Park on the Fourth of July to be reopened in 2276. Colorado’s contributions to the time capsule included a proclamation from Polis, a challenge coin given out by the America 250-Colorado 150 Commission and postcards from across the state.

Colorado is marking 150 years of statehood this year, with celebrations taking place statewide. An official Colorado Day celebration will take place at the state Capitol on Aug. 1, with speeches, a birthday cake-cutting and the dedication of commemorative LEGO sculptures and a tapestry.

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