The lone remnant of a 16th-century palace in Old Goa.

When new viceroys were elected, they passed through this arch to cement the title.

In a small town outside Jerusalem, a roadside diner is devoted to all things Elvis Presley.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

You can row a boat through this ancient underground reservoir.

One of Monterrey's oldest buildings is perched atop a hill boasting impressive views of the city.

These large stone piles are ancient burial sites.

This church also serves as a lighthouse complete with a beacon.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

The tallest lighthouse in the Nordic countries was also the site of a bloody World War II battle.

These 5,000-year-old cave paintings provide a glimpse into prehistoric Finnish life.

Finland's oldest astronomical observatory once played a crucial role in seafaring and timekeeping.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

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

An abstract monument to a symphonic composer.

An alien church provides much needed silence in the midst of a Finland shopping center.

This fantastical icy castle is built anew every winter.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

A subterranean house of worship carved right out of the bedrock.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

Nestled at the southern end of the Bay of Vlore in Albania resides ruins that contain Illyrian, Greek, and Roman influences.

A temple dedicated to the 13th-century Alevi Turkish dervish credited with bringing Islam to the Balkans.