A seemingly out-of-place comic book surprise sits on the 21st floor of the tallest university library in the world. 

This original Mason-Dixon line cairn placed in the 1760s was put in the wrong location because of the gravitational pull of the Allegheny Mountains.

An ornate abandoned schoolhouse hidden in the woods near a decaying mill town.

Cathedral-like Victorian vaults are hidden within this iconic bridge.

The unpredictability of this pendulum's movements has drawn visitors to this magnificent church for decades.

Resting peacefully between two majestically-slanted trees, this roadside water trough circulates water peacefully.

For more than 70 years, this small shop has been a go-to for Kolkata's fountain pen connoisseurs and collectors.

Amid rushing rapids, this small bit of land is an important First Nations site on border between Canada and the United States.

Dedicated to a brave pooch who fought a tiger to save a young child.

Only ruined buildings and abandoned charcoal kilns remain of this once bustling Wild West boom town.

A monument to the legacy of the man who created Spongebob Squarepants at the school where his passion for art and marine biology began.

This former big box store has been reimagined as a massive public art space.

This centuries-old tower hosts endangered bald ibis mating pairs and looms over a pristine beach.

These cabins mark the site where our 11th president was born (probably).

These sailing ship-shaped chandeliers are believed to have been a gift inspired by faith.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

A quirky mausoleum celebrated once every five years with young dancing girls, widows, a tax man, and more.

What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

Cycle, walk, or run up and down on an old historic railway path.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

This hilltop fort is a dark holdover from one of Latin America's bloodiest dictatorships.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

This replica of Columbus's famous ship houses the history of La Palma's maritime importance during the Age of Exploration.