How Many U.S. States Can You Check Off?

What happens when a sculptor has to find a way around a 100-year-old copyright.

The world’s first penitentiary, meant to be humane, drove men insane.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

One of the earliest subway stations in Stockholm, which still looks like the 1950s.

Beginning as a white quartz gravel mine in the early 20th century, it was turned into a Christian-themed tunnel to present the core messages of the faith.

This 19th century wooden span is one of only four retractile bridges in the United States.

The tallest dam in Montana and top 10 in the country.

It's a breathing museum, where you get to breathe along with stunning immersive textile light art.

A real small-town gym became the unforgettable home court of the Hickory Huskers in “Hoosiers.”

A series of markers along one side of an Amsterdam canal memorialize the Jewish residents from the other side who died in the Holocaust.

Learn about the neighborhood founded by the last people ever brought to the United States by the Atlantic Slave Trade, still inhabited by their descendants.