The sprawling attraction boasts a collection of more than 150 historic wagons.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

The 7,000-year-old calcium carbonate formation creates a magnificent natural bridge.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

This deceptively salty lake looks like blushing pink lemonade.

An eccentric inventor's castle home with its own indoor weather system.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Take a monster truck tour around an ostrich farm in the middle of the desert.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This working class sculpture pounds his hammer all the livelong day.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Old submarine parts have been converted into faux whale fins.

A colorful architectural gem in Seattle’s uniquely modern Central Library.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

The first park built over a freeway is a brutalist masterwork.

A giant Troll lurks under one of Seattle's oldest bridges.

A trash dump made beautiful by nature's power.

Celebrating the transformation of trash into objects of beauty.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.