Each year melting snow turns these Austrian hiking trails into scuba zones.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Baroque celebration of the end of the Great Plague of Vienna.

The Habsburgs' royal collections of art and wonders.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The topiary maze at the Habsburg hunting lodge.

The beautiful baroque library of the Hapsburg empire.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This elaborate towering structure was once famed for its revolutionary height.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

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.

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

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

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

This library and museum is dedicated to the life and literature of the Indianapolis native author.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

If astronomy had a ghost, it would look like this observatory.

One-layer pyramid in Indiana.

The world's largest anatomically accurate brain sculpture.