A Neolithic burial site erected around 3000 BC.

You can find more than 200 species of tropical plants at this garden owned by a former ambassador.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

This simple apartment may have inspired some of the most important theories in the history of science.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

How did a 2,000-year-old Roman column find its way to a Chicago park?

Kwanu'sila the Thunderbird has been silently watching over Chicago for more than 100 years (kind of).

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

A Japanese temple, old German townhouses, and public chess tables offer a peaceful escape from the bustle of the North Side.

Orthodox church partially financed by Tsar Nicolas II.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

All of Chicago's wood-paved streets are long gone but two alleys remain.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Former meatpacking facility turned vertical farm and sustainable business complex.

A hot dog stand where the heads are just as hot as the dogs.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.