Growing up, one of my favorite things in the whole world was the O-gauge model railroad at Chicago's Museum of Science and Industry. Atlas Obscura describes the $3.5m refurbishment that opened in 2002:
The exhibit focuses on the intersection of transportation infrastructure and economic activity—the intercity elevated train, suburban commuter rail, and cross country freight lines, all buzzing with a vibrant post-WWII industrial economy of decades past.
The trip begins in Chicago, which is the most recognizable area to a contemporary visitor. Iconic buildings like the Sears Tower and downtown neighborhoods like the Loop are shown in a spellbinding level of detail, replete with miniature cars, pedestrians and vegetation. Tiny electric trains scoot around through the skyscraper valleys and every half hour the museum lights dim as the exhibit enters “nighttime mode.”
As the exhibit moves westward five foot tall Rocky Mountain peaks rise into the air. The tracks cut through mountain tunnels and lumber towns before finally catching sight of the Pacific Ocean and the Port of Seattle. A hulking container ship is docked on the coast, ready to receive the raw materials and manufactured products collected along the 2,000 mile route from Chicago.
It's even cooler than the layout they had back in the day. And it's still one of my favorite things in the world.