The Morris Arboretum

I hadn't even heard of the Morris Arboretum until we decided to visit. It was excellent; I would rank it among Philly's top destinations.

There's a "tree house" observatory where you can look out and down on the trees (rather than up at them). The variety of trees there is really incredible.

As is the variety of flowers: there were loads of hydrangeas of many colors (even multicolored ones).

There's an enormous train setup with recreations of famous buildings from across America, but especially Pennsylvania, of course.

Here's a gondola.

Thankfully the day we visited was not too hot. And it helped that we arrived first thing in the morning.