A blacklight mini-golf fever dream pays tribute to the iconic rock band.

This former industrial site has transformed into a community sculpture garden that hosts monthly Full Moon parties.

This abandoned Brutalist treehouse is a hidden architectural relic.

This sprawling bookstore spans four floors and has more than a million books in stock.

A science fiction-inspired apartment building designed by a famous Spanish architect.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

This hulking behemoth is actually five interconnected towers built in the 1960s.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.