Old Gullet Sinkhole

While it might sound like a mean-spirited nickname you might use for a terrible ex, the Old Gullet Sinkhole is actually a deep chasm full of garbage, is cloaked in darkness, is home to a monster, and is very much a place where most things go to die. Once again, this is a location in Fallout 4. Not your ex. The Sinkhole is also where you can complete the quest Fallen Hero and retrieve Joe Savoldi's grandpa's old hat. You simply jump down into the crater and follow the rushing water until you can see the entrance to Old Gullet Sinkhole highlighted by your cursor and then slide on into the cave. Of course, you'll have to defeat a host of ghouls, a Deathclaw, and other pests first, but that's no big deal since there's also a bunch of loot around. Once you're in the sinkhole, you'll find a magazine, Savoldi's grandpa's corpse, and old gramps' hat. Take that sucker back to Joe at Bunker Hill and you'll get to keep it. Not that great of an award, but at least you get to explore a cool locale.

Prost
Everyone inside might not know your name (mainly because you're a stranger and they're all corpses), but entering the unmarked location of the bar Prost will give you waves of nostalgia if you've ever been a fan of the show Cheers. This Easter egg is only fitting since the setting of Fallout 4 is post-apocalyptic Boston, home of the famous TV bar. To find the dried up watering hole, simply head southwest of the Massachusetts State House. If you need more markers, try heading west of the gazebo at Swan's Pond. Inside Prost, which is German for "cheers," you”ll find a mailman and another patron at the far end of the bar, nods to Cliff and Norm. There are also baseball posters plastered on the walls, which is probably a reference to Sam Malone. Sadly, the jukebox in the bar doesn't play the theme song by Gary Portnoy.

The Yangtze
Getting to the Yangtze, a Chinese submarine in the middle of the ocean, is actually part of a side quest, but it might be easy to miss if you're not the exploring type. In order to get access to the submarine and continue a questline involving an awesome character named Captain Zao, you have to grab the quest "Here There Be Monsters" by speaking to a young boy named Donny Kowalski. This little dude is located behind the Shamrock Taphouse, standing on the docks and looking out to sea. He says that there's a monster's eye that is visible in the horizon. After getting the quest from him, the map marker for the Yangtze will become available and you can swim out to it to pick up the questline, which ends in you getting a shiny gift in the form of homing beacons that mark tactical nuclear strikes. Have fun with that one.

Back Alley Bowling
There's no better way to unwind from a long day of killing and looting like knocking down some pins at the local bowling alley. In Fallout 4, you can head to the General Atomics Galleria to check out Back Alley Bowling, where you'll find 39 bowling balls, 37 bowling pins, and some bots named Tenpin, Split, Strike, and Kingpin. Just be warned that going past the counters will make the bots hostile, but you were probably going to kill them anyway. You can try to knock down the pins the old-fashioned way and lob bowling balls at them, or you could do it the fun way and load the balls into a Junk Jet for some added power. There's also a sly nod to the character Roy Munson from the film Kingpin located in the left side ball return chute, in the form of hand bones.