Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This synagogue in Madison, Wisconsin, is a historic architectural gem and one of the oldest surviving synagogue buildings in the United States.

An old water tower converted into a functioning large Swedish coffee pot showcases Lindström, Minnesota's Swedish roots

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

The unbelievably opulent home built for an infamous newspaperman.

A massive volcanic plug is now a protected area that hosts a number of bird species.

A popular winter vacation destination for migrating monarch butterflies.

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A sharp bend in a dramatic river canyon cut through red rocks.

The location where the iconic movie character declared it was time to go home.

This balancing rock is one of Utah's most unusual geological formations.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

The fifth-longest natural arch in the world, and the longest outside China.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

Contains a wealth of information about the first exploration and later use of the Green and Colorado Rivers.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A tunnel with windows, so you don't miss out on the impressive views.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.