It's unclear what caused the fire that led to this opulent hotel's demise.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

This World War I fortress is the perfect place to catch a Montenegrin sunset.

An ancient capital city that dates back 3,000 years and harbors many surprises.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

One of the largest necropolises in the world is home to a stunning array of historic Middle Eastern tombs.

Reputedly haunted sandstone necropolis with exquisite stone carvings.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

Atop this library is one of the most beautiful green spaces in Warsaw.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

An errant donkey ushered in a new era of mining in Nevada.

In the middle of a remote desert town is a surprisingly opulent hotel.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A wall of chewing gum moonlights as collective art.

A giant Troll lurks under one of Seattle's oldest bridges.

This former coal gasification plant found a curious second life as a popular public park.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.