This giant power line tower is a robot that can express its moods in neon.

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

With over 10,000 lights, this engineering marvel lights up the city after dark.

The quirky gift from West Berlin for the 1968 World's Fair still stands in Hemisfair Park.

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

A gift from the Soviet Union in the 1980s, this is the only statue of the Soviet dictator in Southeast Asia.

This lucky bronze frog was gifted to Madrid by a casino.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

This statue was a gift to commemorate the Thai monarch's first visit to a foreign land.

A six-ton wedding present for the King of the Scots.

This clock was gifted to Mexico as a show of gratitude for its long history of welcoming Arab migrants.

This exoskeleton was gifted to Rutgers University by Japan for its role in educating some of the first Japanese citizens to study outside the country.

Legend says this sacred tree was a gift from goddess Athena.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

This twisty section of highway in the Himalayan foothills is lined with thousands of small mirrors.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

It's safe—and permitted—to walk across these twin natural sandstone arches.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

Underneath the bustling city streets, a hydroponic farm grows unique herbs in an urban oasis.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This imaginative sculpture is a memorial to this town's former mining industry.

A blunder resulted in these charming stone-lined streams becoming the target of a Nazi bombing.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.