Quarantine

A 20th-century naval quarantine center is now a local park.

Built to commemorate the lives of hopeful emigrants who died on a journey from Scotland to Australia.

The metal truss bridge served as the sole entry point to an "isolation island" for smallpox outbreaks throughout the 1870s and early 1940s.

Over the course of its history, this tiny island has held enslaved people in transit and served as a quarantine zone. Today, it's a giant tortoise sanctuary.

This small, lush island has a long and bloody history.

An unexpected ghost village lurks on the southeast coast of Tenerife.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

A complicated, forgotten beacon of hope for thousands of immigrants, "Canada's Emerald Isle" lies in ruin.