It’s designated a national landmark by the Maine Historic Preservation, and on Wednesday night it was open to the public. The Thomas Hill Standpipe in Bangor is only open four times a year, once a season.The standpipe was built in 1897 and, to this day, still regulates the city’s water pressure in the downtown area and provides storage for emergencies. The 50ft. high, 75 ft. in diameter standpipe holds 1,750,000 gallons of water. On Wednesday, community members could enjoy the “Summer Sunset Tour.” Caitlin Burchill walked up the 100 steps to the top of the Thomas Hill standpipe to show us the view.