This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Massive volcano in the Andes is the farthest point from earth's center.

This huge green space packed with activities will make you forget you're in the middle of the Ecuadorian capital.

Quito's historic, main square dates back to the 16th century.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

It took 160 years to complete the most ornate church in Ecuador.

Home of the "true" equator.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This indoor ski resort has a mountain contained inside a mall.

Skyscraper powered by wind turbines attached between its towers.

Only a fragment of this 15th-century Dance of Death survives today.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

The Guardian of Tallinn.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

This beloved marketplace mascot poops money and grants good luck.

A daily replay of the experiment that proved the rotation of the Earth.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

Yo, Adrian!

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.