Miniatur Wunderland (MiWuLa), located in Hamburg (Germany), was the world largest model-railway (scale H0/HO)- attraction, with widely more than 1.000.000 visitors during a year, and over 10.000.000 in total.
en.wikipedia.org/wiki/Miniatur_Wunderland

There aren´t just model-railways around and it´s amazing how much lovely, funny details they had insert in their MiWuLa. Take a look at the group MiWuLa to get a short overview what they did. A must-seen for every visitor of Hamburg, not only the ones who love modeltrains.
Photo: MiWuLa

Photo from twitter.com/MiWuLa/status/339294052698701824

What do Gabon, Guinea-Bissau, Antigua and Barbuda, St. Lucia, East Timor / Timor-Leste, and Micronesia have in common? They are the last countries in the world from which no guests have visited Wunderland, yet. Reason enough for a little sweepstake: Whoever can show his official ID from one of above countries at our entrance will get free admission for up to 10 persons! We’ll keep you posted whenever we checked off one of the countries on the list. The picture shows the current guest distribution.