Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

This work of engineering is imbued with elegance and ingeniousness.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

About 80% of all U.S. avocados are descendants of Rudolph Hass's glorious tree.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Where beautiful signs live on forever.

Paris' linguistic guide to the international language of, yes, love.

The oldest stone house in Paris was built by its most famous alchemist.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.