Based on the search results, it appears that Columbus Day is a federal holiday in the United States, but some states and cities have replaced it with Indigenous Peoples Day. The following information is available regarding what is open and closed on Columbus Day:

• Banks: Most banks will be closed, including Bank of America, Wells Fargo, and Citibank branches. Chase Bank and TD Bank will be open, but its best to check with your local branch for hours on specific locations.

• Mail delivery: The United States Postal Service will be closed, but UPS and FedEx will mostly be operating as usual. FedEx Express and FedEx Ground Economy will have modified service.

• Retail: Most big box retailers, such as Target, Walmart, and Kroger, will be open. However, its best to check with local businesses for their operating hours.

• Government offices: Federal offices will be closed, but city, state, and county offices may have varying schedules. For example, Alabama state offices and courts are closed, but Birmingham City, Huntsville City, and Mobile City are open. Gates to Redstone Arsenal and Marshall Space Flight Centers will be accessible based on... .

• National Parks: National Parks will be open.

Its important to note that the information above is based on the search results and may not be comprehensive or accurate for all locations. Its best to check with local businesses and government offices for their specific schedules on Columbus Day.