The epic model train set the brothers have created is not only a world record, it's also basically a world. It ain't just trains: Cars drive themselves through the cities, only to be pulled over by police; fire engines race through the streets to fight the fires that break out; planes take off and land from the fully functional airport and boats -- even a giant 4-foot scale model of a cruise ship -- sail its seas. There's even a functioning spaceport!
"Apollo Tiny to Ground Control -- we have discovered extremely large, smelly aliens. Let's never do this again."
And if you ever get bored of watching an entire tiny Earth spin around while you pretend to throw lightning bolts at those who incur your wrath, Miniatur Wunderland also has thousands of hidden Easter eggs to find -- from superpowered girls to fire breathers to bank heists to horny couples boning in the fields.
It's OK, they're both plastic and nonliving. Safety first!