One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

Resonating tubes make music from highway overpass.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A huge musical instrument played by the ocean.

The Mighty Wurlitzer organ continues to belt out the tunes at downtown El Segundo's historic home for silent and classic movies.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This sculpture is an instrument played by the swell of the seas.

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

This nine-story building can be played like an instrument.

A large instrument played by the wind.

A Seussian sculpture made of brass instruments.

When the rain falls, this drain system turns into a musical instrument.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

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

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A musical instrument played by the sea.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

Stroll through a wonderland of stupendous moss-covered trees.

Rustic natural hot springs in the deciduous rain forest.

Tour the original street level of Port Angeles, buried underground in 1914.

A glimpse into the "Logging Capital of the World" at a time when there was far more forest and far less machinery.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.