A black cat protests the City Guild in Riga's Old Town.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

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

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

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

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

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

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Paris' linguistic guide to the international language of, yes, love.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Climb to the top of the world's largest seated bronze Buddha.

This hulking behemoth is actually five interconnected towers built in the 1960s.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

Cathedral carved out of salt, located a mile below the Earth's surface.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

A Buddhist theme park brings you a Buddhist version of Hell.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

The restored and active Victorian-era final resting place of San Francisco.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The colorful, smiling concrete silos of Vancouver.