One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Largest lake in Great Britain measured by surface area.

The heads of two giant mythological water horses honor Scotland's horselord past.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

This blowhole is supposedly caused by a trapped monster.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

Watch the newest land on the planet form before your eyes.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This black shoreline is made up of exploded lava particles.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This legendary urban waterfall creates a dazzling display of rainbows.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Fifty years of contamination in Scotland's waters.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

A giant scrawl on the skyline of south London.

Tucked inside a South Bank bar is an epic expressionist chronicle of the 20th century.

A sculpture of a famous ape who was once a beloved household name in London.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

This striking statue brings a scene from the African savannah into central London.

Legend has it this gnarled old tree was planted by Tsar Peter the Great during his visit to London.