Walk the whole Mississippi River!

Railroad came. People came. Railroad left. Town died.

More than five miles of underground passageways.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A castle-inspired apartment building that has stood in Birmingham since 1927.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

This botanical garden has been nicknamed "Alabama's Little Corner of Greece."

Now abandoned, the first reinforced concrete bridge in Alabama still stands over the Pea River.

Six separate cemeteries became one, on the grounds of a former schoolhouse.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

The second-tallest water tower shaped like a peach in the American South.

A bronze sculpture of a white dove commissioned by Pope Benedict XVI.

This tiny, triangular block has held the world record since 1964.

This 19th-century hotel and spa hosted famous guests like like the Vanderbilt family, William Waldorf Astor, Helen Keller, and Jay Gould.

This small cemetery contains the graves of prisoners of war who were interred at Fort McClellan during World War II.

Large rocks have been painted to whimsically resemble wild and farm animals.

This 36-foot-tall bronze Lady Liberty holds a real flaming torch.

This coastal port saw one of the most significant battles of the Civil War.

The metal spire on the roof of this tower was intended as an airship docking station, but it was never actually used.

Underneath this water pump, Annie Sullivan helped Keller speak her first words.

This papier-mâché diorama celebrates an unusual landmark: the brightly-colored runoff from a local sock factory.

In 1863, a woman buried her hard-drinking husband beneath his beloved booze.