A men’s restroom became a sandwich shop.

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Created by a local artist, these quirky sculptures each have their own names and personalities.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Statue commemorating the use of ether in anesthesia.

The ruins of a pre-Columbian fortress city so secure it held off the Spanish conquistadors for over 20 years.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

Built for the 1962 World Cup, this fully functioning botanical clock is still ticking.

This observatory high on a hilltop in the center of Santiago got its start in 1852.

This bright yellow bridge is a true engineering feat.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

The model behind the iconic 3D test model.

A gathering of green robots at the Googleplex.

800 apricot trees honor Silicon Valley's agricultural history.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

A trash dump made beautiful by nature's power.