This massive subterranean fissure is known as the "underground Grand Canyon."

The oldest Hindu temple complex in Nepal serves as the seat of Nepal’s national deity, Lord Pashupatinath.

Feast your eyes upon hundreds of Nepal's native butterflies and moths.

The former stronghold of the Malla Dynasty has remained virtually unchanged since the 17th century.

This historic square in Nepal is home to temples dating back to the third century.

This elegant neoclassical garden is a peaceful oasis in the middle of the Nepalese capital.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Sacred Buddhist home of some spiritual monkeys.

A beautiful stretch of Bangladeshi river known for its high quality sand is possibly more remarkable for its color changing water.

The fight to make Bengali an official language started in this stunning university hall.

This colorful palace is an oasis of calm amid the hustle and bustle of the Buriganga riverfront.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

Long before air conditioning, Persian architects found an ingenious way to cool off.

A dreamy mausoleum honors Persia's most famous poet.

The hottest, driest, and most scenic desert on Earth.

17th century mosque for Shah Abbas' harem.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The palace of the King of Kings, burned by Alexander the Great.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

Space-age minarets towering over Islamabad.

A 17th-century mosque that was used for war more than worship.

This grand Pakistani mausoleum can only be accessed via an almost 1,000 foot long alleyway.