In the woods of Indonesia’s Magelang Regency sits one of the modern world’s more unusual houses of worship: Gereja Ayam, the Chicken Church, which is shaped like a giant fowl wearing a crown. And it’s currently falling to pieces.

Certain parts of the U.S. have teetered into decline. Places designed to bring joy are now rotting quietly, wrapped in weeds. Seph Lawless, an artist and chronicler of all things ruin-related, recently visited several of these abandoned amusement parks. He returned with some pretty creepy pictures. We’ve got a gallery.

A single abandoned building can be a gloomy thing, an apocalyptic scene in miniature. But what about when an entire island is built up, inhabited by humans, and then left to rot? As these videos show, they look like footage from the end of the world.

We love photographs of grand, abandoned buildings, where we can see what happens when once-luxurious digs fall into decay. But there’s something special about taking a video tour of a crumbling mansions... something that makes the experience a little creepier.

There's something kind of awe-inspiring about standing in a huge cave, and seeing the vaulted ceilings rise up over you. Caves are amazing miracles of nature — but sometimes, the best caves are actually carved by people. Here are astonishing videos of some of the world's greatest human-built caves.

The McBarge was a floating McDonald's restaurant constructed for Expo '86 in Vancouver, but after the expositions ended, it never saw another bag of french fries. Today, the McBarge sits empty in British Columbia's Burrard Inlet, although its owner hopes to someday turn it back into a working restaurant.

You don't have to bring your own flashlight to take a tour of the cities that humans have built underground. Just lean back and let these videos unlock all of their subterranean secrets.

There is a hidden industrial gem north of Lake Balaton, near Balatonfűzfő, Hungary, and when I say hidden I mean it. Because what else do you call the bare remains of a wartime power station 30 feet deep under the ground? Luckily I got a chance to bring my camera inside the haunting corridors of this long gone…

Kingston Penitentiary closed its doors in September 2013, ending a legacy of 178 years of famously harsh treatment. "Canada's Alcatraz" has inspired lots of stories, but there are few pictures of what life was there. Except that photographer Geoffrey James had a privileged look on the inside.

Many abandoned buildings take on a slightly creepy aspect just because of their decay. But then there are places that are not only abandoned, but also house tables once used for dissections and chambers that once stored dead bodies, like Freie Universität Berlin's former Institute of Anatomy.

What if everyone on Earth suddenly vanished, leaving behind pristine cities devoid of human life? These astonishing timelapse videos show us what cities from San Francisco to Shanghai would look like as ghost towns.

Some of the buildings that tower high over city skylines are actually modern ruins in the making, their vast interiors abandoned or never completed. These tall buildings may be impressive on the outside, but their insides go unused.

Today, the city of Pripyat, Ukraine, is a ghost town, abandoned and overgrown in the wake of the disaster at the Chernobyl Nuclear Power Plant. But once it was a thriving town, filled with people who walked the streets, visited the beaches, and even rode that famous ferris wheel.

You can build to last, but it won't help if the waters come to cover up all of your amazing houses and town buildings. That's the harsh lesson that towns and villages around the world have learned too late. Just check out some haunting images of beautiful, scenic towns that have sunk underwater.

You've seen where airplanes go to die, but what happens to the airports we abandon? They slowly fall to pieces, like the ones in this gallery, looking like sad monuments to a future that never happened.

No, these aren't natural disasters, craters from a huge meteorite, or the burrows of some massive worm from space. These are mines, created by the Soviet Union to harness the awesome natural resources of Russia and Eastern Europe. But they look like a glimpse of Hell itself.

Want to know what it would be like to live in a subterranean world? Visit these incredible old mines and see how the Morlocks live.

You've entered an enormous building scoured by ocean tides and haunted by hulking machines, slowly rusting away. It looks like the set for a post-apocalyptic movie, but it's actually a real-life Soviet submarine base, left over from the Cold War.

These malls were once bustling hubs of commerce, but after a few years of neglect, they went from Mallrats to Dawn of the Dead. Now they would be the perfect sets for a movie where shoppers have been replaced by survivalists.