Try not to get slimed in Tribeca.

Six miles off the coast of Key West, a former military transport ship is now one of the largest artificial reefs in the world.

The front of this 17th-century cottage also contains a large, stone face.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

A trash dump made beautiful by nature's power.

Celebrating the transformation of trash into objects of beauty.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

These markers are used to document elevation changes around the famed dam.

Eighty million natural history specimens call this gargantuan museum home.

A ferry has operated across the River Hamble for around 500 years, but its distinctive bubblegum pink is a more recent addition.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

After 97 years of constant vigilance from the dome of the Texas State Capitol, the original Goddess of Liberty retired to a life of climate-controlled leisure.

Though illegal, city officials have made an exception for this work of art.

The second-highest train station in Europe.

The ghostly remains of an accidental sea.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.