Look closely and you’ll notice that the color changes a third of the way up the tower.

D.C. once had its own tiny rival to the New York Stock Exchange.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

This unassuimng grain elevator, commonly confused for a smokestack, helped inspire the modern architecture movement.

A Borgesian work of art that may blur the line between fiction and reality a little too convincingly.

Handcrafted thermal spa washes away each night with the tide.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Eat your Big Mac in a DC-3.

Come for the bait, stay for the brioche.

Hundreds of toothbrushes hang from a wire fence along a quiet New Zealand road.

These two delightful animal-shaped buildings host a visitor center and wool shop.

The wooden sculptures are studded throughout a small New Zealand town.

A steampunk airship "floats" above Hamilton Gardens delivering plants and compost.

Tubing through a cave lit with glowworms is a magical underground experience.

Giant topiary dog once played a role in a terrorist bomb plot.

The headquarters of the famous Yale society.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

These quaint French houses dangle precariously over a precipice.

The people's champion of the French Revolution was so overcome by grief at his wife's death that he exhumed her in the dead of night to make one final replica of her face.

A tiled, multi-level garden of survival in Lyon.