A historic observatory precariously perched at the "Top of Europe."

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

Japanese island famous for poison gas and fluffy bunnies.

Some of the world's only freshwater seals live in one very special lake in Russia.

The USSR’s Conquest of Nature lead to the domestication of many moose—no squirrel.

Giant, friendly pelicans in Central London, the most unlikely of places.

An eccentric aristocrat brought these Australian natives to their current Scottish home.

In paradise, feral pigs have claimed an island all to themselves.

Wallabies live naturally on this Irish island.

Morocco's Argania trees are infested with nut-hungry goats.

This homegrown adoption center offers a wonderland of feline companionship.

Enormous lake at the bottom of a unique cave system.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

The retired vessel is South America's first floating museum.

This high-Andean reserve protects the graceful vicuña that was nearly hunted to extinction for its precious wool.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

These overlooked ruins give an intimate look at the Inca Empire's urban planning prowess.

An Inca spa, military outpost or maybe… both?

A paradisical gorge with rapids, waterfalls, and wildlife whose raw beauty is the stuff of CGI movies.

A kitschy Italian medieval-style castle incongruously located amidst one of the most historic towns in the Peruvian Amazon.

This small oxbow lake has rare giant river otters and some Seussian-sounding birds.

After an epic flood washed away its enslavers, this city has been part ghost town, part cultural wildcard for the past three centuries.