One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

The most powerful waterfall in all of Europe.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

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

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

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

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The most accurate timepiece in the world.

Home to items never before seen by the public.