Since the first doughnut machine was born in New York in 1920, the doughnut industry has undergone several rounds of upgrading, and bakeries large and small in the United States are challenging the limits of doughnut innovation.

There are various chain stores in big cities and towns, such as Krispy Kreme, which opened in 1937, and Dunkin’s Donuts, which opened in 1950.

In addition to this, you can also find some creative and distinctive doughnuts in different cities, such as cronuts combined with croissants. These unusual treats will definitely awaken a whole new understanding of doughnuts. Here are the donut shops you can't miss in America!

1. Dough New York, NY

Dough first settled in Brooklyn, New York, and soon opened two new locations in Manhattan because of its popularity. Their food is inspired by European and Latin American desserts, with handcrafted fritters in-store, and Tiantianquan also has special flavors such as the popular Chocolate Earl Grey and Tropical Pepper.

2. Voodoo Doughnut Portland, Oregon

This store is a must-see in Portland, not only for its novel doughnut flavors, but also for the Portland spirit behind the store. The daily long queues outside Voodoo's main store led to the opening of a second store in the city, followed by stores in Eugene, Denver, Austin, and even overseas in Taipei.

A pioneer in innovative doughnuts, the store is known for its Voodoo Doll doughnuts. A doll-shaped raspberry jam-filled pastry covered in chocolate frosting and inserted with a pretzel stick, it's the perfect blend of flavours into a locally inspired treat.

3. Federal Donuts Philadelphia, Pennsylvania

As famous as the Philly cheesesteak sandwich, the doughnut is also a favorite in Philly. Federal Donuts, a local favorite, also offers donut fried chicken sets in addition to its desserts, which are also popular with locals.

Federal Donuts has five stores in Philadelphia, and because the doughnuts that are freshly baked every day generally sell out quickly, customers who arrive early can choose the flavor first. Their favorite flavors are Lemon Meringue Pie, Grapefruit Baked Brie, Cinnamon Brown Sugar, and Traditional Donuts.

4. Glazed Charleston, South Carolina

Glazed donuts in Charleston use the freshest local ingredients, with herbs and berries grown in the garden behind the store. Dough, jams, fillings and syrups are also made on site.

Glazed's flavor options are also very unconventional, with green tea sesame, blueberry sweet corn. You can also try "The Charleston," a local specialty doughnut made with homemade pralines!

5. Primo's Donuts Los Angeles, CA

This is a family-run store established in 1956, and Primo's Donuts usually sell out early, so be sure to get in line early in order to sample the food. Two of the most popular items on the menu are Primo's famous buttermilk doughnuts that are crispy on the outside and firm on the inside, and their homemade sugar-coated twists.

Dessert lovers must want to hurry up and eat it! Then don't forget to have a good meal at these donut shops while traveling locally.