A boy watches the trains go by at the Walthers Model Train Display during Amtrak National Train Day at Union Station on May 11, 2013, in Washington, D.C. (Paul Morigi/Getty Images for Amtrak)

Calling all train enthusiasts!

A reminder that this Saturday is National Train Day — an event that will be celebrated at rail stations across the country and here in D.C. at Union Station.

As Jennifer LaRue Huget writes in her Kids Post story today:

“Trains have been a big part of life in the United States for more than 100 years. The first train to pass through Union Station was the Baltimore and Ohio Pittsburgh Express, which arrived at 6:50 a.m. on October 27, 1907, before the station was even completely built. Nowadays, about 70,000 people — as many as are expected to attend the next Super Bowl — pass through Union Station each day.”

The festivities will begin at 10 a.m. and run through 4 p.m. Saturday. There will be model train displays, train-related crafts and even a chance to take a quick trip on one of Amtrak’s Acela Excursion trains (but you’ll have to buy your tickets in advance).

You might want to plan ahead. Last year, more than 11,000 people were at the Union Station event.