One of the highlights of my trip to Prague was the National Technical Museum (Národní technické…read moremuzeum). It was fantastic. The museum is quite large, with 7 floors (floors -3 to 3, with a floor 0), and including a quick lunch at the museum, I was there for nearly five hours.
The exhibits I saw were: Technology in the Home; Printing; Astronomy; Television Studio; Architecture, Civil Engineering, and Design; Photography; Chemistry Around Us; Measurement of Time; Transportation; Steam Engines in the Czech Lands; Metallurgy; Mining; and a temporary exhibit on Taiwan, which was in place of the Technology in Toys exhibit.
My favourite exhibits were the astronomy, time, and chemistry exhibits. The astronomy exhibit had really cool instruments, and I probably spent the longest in that exhibit. The Technology in the Home exhibit was pretty interesting as well, and had household appliances on display from the mid-19th century to present time. I didn't care too much for the Taiwan exhibit, although the display of ancient Chinese locks and keys was neat.
Overall, this is an amazing museum, and I highly recommend it. The only issue I had, however, was at the restaurant. Before I went to the museum, I checked on their website that they took credit card, which they did. However, for some reason, the restaurant took cash only, which was not mentioned on the website, nor were there any signs indicating this, so I only found out after I had ordered my food. And as I was towards the end of my trip in Prague, I was running low on cash. So beware about that, and bring cash just in case. Other things to note: there is no wi-fi, but it is wheelchair accessible.
[Yelp collections: Europe 2015; Prague, Czech Republic; Museums and Art Galleries]