Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This black shoreline is made up of exploded lava particles.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Vietnam's largest Buddha statue depicts a female sage.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

Life-sized painted illusions let pedestrians blend in with the street art.

The spot where the two men ate together now stands enclosed in glass.

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

The ruins of a monastery that dates to the 7th century.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

This Neolithic passage tomb forms part of a World Heritage Site.

The ancient tomb acts as a calendar that keeps perfect time.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

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

The modern birthplace of Irish freedom.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The largest axe on the planet contains a time capsule that seems like it may never be discovered.

This eclectic Austin curiosity shop is home to all things strange and unusual.

One part antique store, one part curiosities hodge-podge.