New fungal and bacterial species call this deadly lake home.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

The only road through the heart of Glacier National Park.

A cabinet of curious mathematical models and old calculators.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

There aren't too many operational funiculars around, but Pittsburgh has two!

The last street in Pittsburgh that's paved with wood.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.