This irregularly shaped sea fortress has defended not one but three different sovereign states.

Dedicated to the outnumbered Finnish forces who pushed back Soviet forces during the conflict.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

Over time, this castle grew to encompass the entire island.

A lush oasis full of vibrant plants and striking geometric displays.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

A turquoise lake within a volcanic crater.

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

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

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.

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

This 12-inch-tall wooden sculpture of a winged Virgin Mary has inspired much devotion and countless replicas.

A celebration of Colombia’s premier contemporary artist.

This tiny shop has been serving traditional tamales for more than 200 years.

A plain wooden seat that once belonged to one of the most prominent figures of the Protestant Reformation.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

This pub boasts a curious history and may have inspired a Dickens character.

The fences outside some of South London's estates are made from recycled World War II stretchers.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This coffee shop lies hidden beneath a historic church.

This South London cemetery holds the remains of more than 15,000 people.

The London statue that imitates passersby.