This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

No one's quite sure where this quirky university tradition originated.

This iconic water tower and failed bandstand is open for panoramic views once a year.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

Half of a waterfall goes into the river while the other half seems to disappear.

Terraced flowerbeds and rock sculptures in the midst of the Minnesota wilderness.

The atmospheric road was never meant to be so creepy.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

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

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

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

The modern birthplace of Irish freedom.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

When waves crash onto this section of beach, the rocks sing a song.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

Minnesota's oldest and deepest mine is now an underground physics laboratory.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.