This Irish museum in a historic 19th century market pays tribute to the glory of butter.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Lie in a hammock where George Washington stood.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Once America's longest-manned military fort, now an abandoned hulk.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

This quiet area of Yunnan Province annually transforms into an unbelievable sea of yellow flowers.

A naturally beautiful, seemingly bottomless deep blue spring.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

400-year-old garden, restored to beauty.

Giant granite sculptures representing family on the northern coast of Spain.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

A collection of collections, including an anatomy museum, the “Cabinet of Physics of Alessandro Volta, a museum of natural history, mineral collection, and much much more...

A huge museum of much more than just agriculture displayed in a princess's palace.

This former insane asylum now holds a pathological anatomy museum.

Anatomical cabinet holds unexpected treasures.

A collection of wax anatomy by the great sculptor Clemente Susini.