A historic steam engine will be on display this weekend at Union Station in Kansas City.

The Union Pacific’s No. 844 – the last steam locomotive it ever bought – is scheduled to arrive at 1 p.m. and be on display Sunday.

The railroad is celebrated its sesquicentennial this year, and it’s sent No. 844 on several good-will excursions this year. On Thursday, it leaves its base in Cheyenne, Wyo., for stops in Nebraska and Kansas before stopping in Kansas City on its way to Houston. This will be the seventh and last leg of the 150th anniversary tour.

The railroad took delivery of No. 844 in 1944 and until 1957 was used for high-speed passenger service. But diesel engines were replacing steam engines, and No. 844 was used for hauling freight from 1957 to 1959. Then it was saved from being scrapped in 1960, and its been restored. With its distinctive whistle that can be heard for miles, it's popular with rail enthusiasts.

When the train is rolling, the railroad posts location updates on Twitter. Follow @UP_Steam.