The Diomede Islands: The Town Where You Can Gaze Into Tomorrow

Situated in the Bering strait, the body of water which separates Russia from the USA, are the two Diomede Islands. The larger of the islands, aptly named Big Diomede, is owned by Russia. Just 3.8 kilometers East is the smaller island, Little Diomede, part of the US State of Alaska. These islands are thought to be the last remnants of a land bridge, which connected the continent of Asia to North America during the last Ice Age.

https://www.maritimeprofessional.com/blogs/post/diomede-islands-13618

The International Date Line (IDL) is an arbitrary line which runs from North to South around the 180th Meridian, which demarcates the end of one day and the beginning of the next. As time zones are defined locally by individual nations, the IDL swerves around territorial boundaries. Rather interestingly, therefore, the IDL passes between the two Diomede Islands. Meaning at a given time, Little Diomede is a calendar day behind Big Diomede. By standing on one of the islands, you can effectively look either into the future or into the past*. 

The islands are not uninhabited either. The island of Little Diomede is home to a small Inupiat village called Inalik (below), which has a population of 115. In Winter, the waters between the islands freeze, allowing people to cross between the islands- effectively becoming a land border between the USA and Russia. During the Cold War, such crossings were no longer permitted, and the border between the Diomede islands was known as the 'Ice Curtain'. Although now more relaxed, border restrictions between the two countries prevent the native population from reuniting with their relatives in Russia.

https://commons.wikimedia.org/wiki/File:Little_Diomede_Island_village.jpeg

*Due to locally defined time zones, the two islands are 21 hours apart, rather than a whole day. So if you were hoping to 'look into the future' on Little Diomede, you should do it after 03:00.