An eight-sided home built during a brief octagon craze in the 1850s.

Faces carved into the cliffs create an otherworldly walking trail.

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.

The world's largest floating loon bobs in the lake to kick off an annual festival.

A stone face watches over the river.

An amazing collection of sculptures and art.

A sculptor's dream castle turned fantastical ruin.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

As its grandiose name implies, this wooden dome is unsurpassed in size.

The honor of highest point in Michigan was almost given to the wrong peak before this mountain won out by 11 inches.

Housed in the university planetarium, the thousand-strong collection of tiny towelettes includes a used one from the hosts of Car Talk.

Large one-man sculpture park in Michigan.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

The writing studio of an American adventure author, built in the style of a medieval castle.

Strange physical sensations and optical contradictions keep visitors coming back for more.

This freshwater spring fills with 10,000 gallons of water per minute.