The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

These naturally balancing rocks were pictured on every Zimbabwean banknote, up to the 100 trillion-dollar note.

The stunningly blue waters of these beautiful caves also have a violent past.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

The pyramid and dome deep inside the Dzūkija forest are believed to channel divine energy.

The world's northernmost flowers cling tenuously to life on desolate Kaffeklubben Island.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

America's smallest "national forest" has only 33 trees.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

This shrine to the patron saint of Alaska sits on a small tidal island and was built from the land’s own beach stones.

The ruins of this Alaska gold mine form a gorgeous ghost town.

A museum devoted entirely to hammers has more than 1,400 items on display dating back to the Romans.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

The remains of the first saint from Alaska in the Russian Orthodox Church.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

A network of fortifications that never saw conflict.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

A historic dam made famous for its turbines and feature in a Hollywood classic.