Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

This strange statue features a bust of the famous composer plopped atop a woman's body.

This "mathematical tower" was an observatory, early skyscraper, and place to reflect on all of nature and the cosmos.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

The medieval network of canals hidden underneath the city is opened to explorers each year.

Museum devoted to the artificial language of Esperanto.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

An unassuming 13-acre park is home to over 12,000 roses.

An office built to look like a giant basket.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

Considered by many to be one of the most dangerous highways in Alaska.

This abandoned mine offers a glimpse at what life was like for those who came to Alaska seeking Gold Rush riches.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

A trading post in the North Pole where children send letters.

The king of U.S. high points towers over every other peak on the continent.

An unusual geological feature towers over the remains of a dark episode in United States history.

At the time of its completion, it was the tallest dam in the world.

The only retired U.S. nuclear missile silo that is open to the public.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.