A chessmaster's dream destination.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

An abandoned factory along the Mississippi coated by a giant mural.

Hundreds of graffiti artists have decorated this flood-wall on the west bank of the Mississippi River.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

The seventh largest spring in the world.

Often referred to as the largest spring in America.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

A historic, scenic mill that was forced to close due to overlogging.

One of the deepest springs in Missouri.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

Only known mainland rookery of the threatened Stellar sea lion.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

A walk through the historic city center, under the streets of Seattle.

The longest and widest floating bridge in the world.

This little museum has an exhibit devoted to the elusive forest denizens.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Bits and pieces from the ill-fated Donner Party's winter cabins.

The highest bridge in America was built for an almost unnervingly small amount of money.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

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

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.