On Sunday afternoon we went to the Durham Museum, which is Omaha's former Union Station and a really impressive example of classic art deco architecture. Union Pacific Railroad donated Union Station to the city of Omaha in 1971, and four years later the museum opened its doors. The Durham is affiliated with the Smithsonian Institute, and has strong ties with the Library of Congress and National Archives, which means it gets many traveling exhibits and special speakers' series on some of America's most compelling subjects. The Museum is about two miles from my place and I really don't get there as often as I should.
I would recommend expanding these photos for better viewing.

The photo above shows the Great Hall where train passengers used purchase tickets, view train schedules, and wait to board the train.

This is the ceiling of the Great Hall.

Here is one of the last street cars to run in Omaha around 1955. Plans are in place to resurrect the streetcar system in the downtown/midtown area sometime in the next few years. This car will likely not be put back into circulation.

Here's Isabella in the kids' money exhibit making a $100 bill with her face on it. I didn't realize until after I left this exhibit that I wasn't supposed to take photos in here. Oops.

Here's a clear box full of $1,000,000.

This photo was taken in the lower level in what used to be the main train depot. The Durham allows visitors to climb through several restored passenger train cars.

Luxury car.

Dining car with a bar at the front.

Some sort of non-private passenger car with seats below and beds above.

Private sleeping cabin.

After the train, I went to the exhibit showcasing Omaha's Trans-Mississippi International Exhibition, held just north of downtown near the Missouri River in 1898.

This is a model of the temporary structures constructed for the Trans-Mississippi Exhibition. You might have to expand this photo to see anything worthwhile.

I went back through the train when the kids wanted to see it. Here's Isabella's cousin Dillon pretending to use a toilet in one of the train cars.

Isabella and Dillon in one of the train bunks.

On the way out I took a photo of the other end of the Great Hall.

Here's a better look at the ticket counter. Behind the counter is now a gift shop.

Here's a view of downtown from the Durham parkin lot.

Outside the Durham Museum.

A distant view of the Durham Museum.