A crumbling hospital from the 1850s on Roosevelt Island.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A huge musical instrument played by the ocean.

This secluded walkway overlooks a magnificently wild London green space.

A 13th-century inn where the ill-fated King Charles I spent his last night of freedom.

One of the biggest markets in Asia, under one of the continent's largest domes.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

A macabre tour of Hollywood’s deadly history.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

World-famous, Pink's still manages to keep its prized cult fetish status.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

More than 21,000 images fill this overlooked gem of a prehistoric site.

This quirky Arkansas wax museum does not shy away from the macabre and the grotesque.

What was once England's second-richest abbey is now a haunting ruin.