The vast, legendary catacombs hold secrets much stranger than stacked bones.

Singapore's oldest Hindu temple.

This royal shrine and cemetery is hidden amidst modern public housing.

The oldest Muslim cemetery in Singapore, with a strong royal connection.

Singapore's landscaping project is home to 18 incredible Supertrees.

Buddhist university that allows English-language speakers the opportunity to study with monks in Thailand.

A tall karst islet popularized by 007.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

The house where the writer spent his formative years.

Though they've since been renamed, these two streets hint at Dublin's darker days.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

This Singaporean food-court stall was home to the world's cheapest Michelin-starred meal.

This lonely memorial marks the supposedly haunted site of a brutal 19th-century murder.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

The house that took a plunge into the facade of a museum.

The first modernist church in Europe.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

The solemn exterior conceals an opulent interior of this 17th century church.

Dine amidst exotic plants at this former royal greenhouse.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This cubist Vienna church building looks like some sort of alien stonehenge.

Op-art architecture designed for happiness.

A spherical "micro-nation" in the heart of Vienna.