This abandoned office building is a lasting example of Soviet-era architecture.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

Relics from an era long gone, sit idle outside this Estonian museum.

This set of concrete chambers resonates according to different notes of octaves.

A spectacular Petrine Baroque summer palace commissioned for Catherine I by Peter the Great.

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

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

This park built on a former fortress has a reputation for romance.

This free museum is building a collection of books that are banned, censored or burnt around the world.

A unique sculpture calls the outside of this steakhouse home.

This former medieval prison now unlocks Estonia’s rich photographic history.

The oldest continuously operating pharmacy in Europe.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

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

A series of concentric circles represented a bold new experiment in socialist urban planning, and it notoriously difficult to get around.

A forest park outside Tallinn full of architectural and artistic curiosities.

In a forgotten Central Valley industrial park lies the busiest railroad junction in California.

Hundreds of tree trunks and Welwitschia flowers populate this living fossil haven.

This sculpture is a cross between an observatory and an earth mound to honor the community's rich history.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."