This is true.
The Mercer Museum looks cooler than Fonthill (I've been there myself):
[source]
Or how about Isaiah Zagar's glass murals on South Street?
[[url=http://www.bridgeandtunnelclub.com/bigmap/outoftown/pennsylvania/philadelphia/south/southst/7th-broad/index.htm[/url]]
Weird, kooky folk archiartists...