The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

See some of the world's greatest racing horses at this idyllic thoroughbred breeding facility and garden complex.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

The world's tallest box hedge is found in a delightful garden.

Behemoth, cannon-like telescope operated by generations of Irish earls.

A hugely vast Irish landscape of barren rock that stretches for miles.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

A trading post in the North Pole where children send letters.

The king of U.S. high points towers over every other peak on the continent.

Four-story concrete hotel never opened to customers.

An auroral research program that superheats the ionosphere.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.