A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

A memorial dedicated to the victims of the Columbine High School shootings.

This marker identifies the location where three states converge.

According to local legend, a tree grew from the stake that killed this alleged vampire. In reality, he probably died from influenza.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

An annual festival celebrating Colorado's most famous frozen corpse.

Thousands of people walk over this fantastic work of art every day, but how many notice it?

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

A memorial to a larger-than-life legend, inside a county that also holds Bunyan's death certificate.

After four years of grasshopper plagues, this chapel was erected as a plea to God to make them end.

Thousands of majestic trumpeter swans fill this park, sounding distinctly like a certain brass instrument.

This replica of an 8th century burial ship actually sailed to Norway before returning home to Minnesota.

When waves crash onto this section of beach, the rocks sing a song.

Half of a waterfall goes into the river while the other half seems to disappear.

The country music legend's grave is surrounded by Astroturf because fans kept plucking out the grass.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

Cadillac where country's first big star was found dead.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.