The world's largest bioluminescent area was undiscovered by science until 2005.

An isolated dive site teeming with cnidarians.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Most prolific publishing house in the 1600s open to the public.

Lavish royal estate punctuated with heated greenhouses.

One of the deepest indoor swimming pools in the world.

Museum in a swimming pool where the water still flows.

World's second largest particle accelerator, where nature reveals its secrets.

Former meatpacking facility turned vertical farm and sustainable business complex.

A Museum of Holography frozen in 1974.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.