The absolute, coolest, freaken awesome thing ever built in 1890

What's the coolest thing someone did in 1890? It wasn't creating the car, making a camera without powdered explosion flash either. So what was it?

Witley Park.
Oh, wow, that sound's like fun....?

Take a look at some of these pictures:
http://www.flickr.com/photos/cybergibbons/sets/72057594107271287/

Basically, it's a giant underwater dome-ballroom. UNDERWATER! Why don't we have more of these things! Natural light, a nice green tint from the alge, what could go wrong! I mean, this one lasted for over a century, right! It's not like the glass panels are extremely thin and could still break at any moment, or anything...

That statue is on top of the underwater dome. To get that angelic look, people put bright lights in the dome at night, creating this awesome final photo.