A 125-meter long "tribute to the Brazilian people."

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

Gigantic unfinished stupa and the world's 2nd largest bell.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

A museum dedicated to the history and exploration of both popular music and science fiction.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

An Amazonian hotel is the ultimate treehouse and provides stilt based accommodation.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

One of the best beaches in the entire world.

The university library shaped like a giant piece of Swiss cheese.

The patron saint of spinsters grasps a container of dried blood.

Roman ruins top white travertine terraces formed by ancient hot springs.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

A stunning silver lining to global warming's gloomy cloud.

A Gothic cathedral created from volcanic rocks.

Thrilling and delicious complement to any dining experience.

A monolithic monument in Greater London.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

Fire meets ice at the southernmost volcano on Earth.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

Microscopic fossils suggest Australia may be the birthplace of sulphur-based life forms.