Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

A subterranean Holocaust refuge within one of the world's longest cave systems.

A valley of unique erosion patterns lends to a view like nothing on Earth.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

Peek through a transparent pyramid and drink in the mountain made of books.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Sacred waters rescued from the wrath of a volcano.

Pompeii's less famous neighbor is still revealing her secrets.

A French-Colonial era collection of taxidermy and wet specimens, secreted away in the National University of Hanoi.

A vast collection of rare books, manuscripts & extraordinary objects illustrating the history of medicine.

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

A picture-perfect town, perfect for blowing up.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

London's old-school healing garden.

The oldest volcanology research center in the world.

A naturally beautiful, seemingly bottomless deep blue spring.

This landlocked lake is the world's largest on an island.

A petite castle folly in the English countryside.

Visitors to this library are in for a real-world education in modernist architecture.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.