At least seven hues of blue and turquoise make this freshwater lagoon unique.

A building so large that it has its own weather.

The secret city built by the Manhattan Project.

Oddly shaped rock formation, misassociated with a nearby utopian community.

A glimpse at Walt Disney's vision for a "community of tomorrow," in miniature.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Krakow's own version of the Hollywood Walk of Fame.

Legend says this is actually a heartbroken prince waiting for his true love's kiss.

This bell stars in a tragic love tale and is said to make wishes come true.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

A small oasis not far from downtown Moab.

Legends surround this jagged rock formation in the New Mexico desert.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

This Communist-era residential block is one of the longest residential building in Europe.

The only Roman honorific column in Istanbul.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A section of the long chain that blocked enemy ships from entering Constantinople.

A pretty park of over 1,600 olive trees that grew from just three saplings brought over from Spain.

Shoes and revealing shirts are not allowed inside this giant Vietnamese Christ.