A British general, a suggestive tree, a map of paradise.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

This stone complex marks the urban center of a lost civilization.

The Uros people live on floating reed islands in lake Titicaca.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A treehouse assailed by the elements and the government, now gone.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The wooden airship was the largest flying boat ever built.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.