Yes, they are both pretty remarkable achievements and even using modern technology they would be very difficult to replicate.
Some non-examples of archi the US Virgin Islands, the British Virgin Islands, and the Dutch Virgin Islands. To this list, you can add the Hawaiian Islands as well.
chain islands
Hawaiian Islands, Fijian Islands, Jamaica, Haiti/Dominican Republic, Sri Lanka, Taiwan
The Leeward Islands are located to the northwest of the Windward Islands in the Caribbean. The Windward Islands are located to the southeast of the Leeward Islands. Some examples of Leeward Islands include Antigua, St. Kitts, and Anguilla, while examples of Windward Islands include St. Lucia, St. Vincent, and Grenada.
Hawaii and New Zealand are two examples of regular islands.
Three examples of archipelagos in the United States are the Florida Keys, the San Juan Islands in Washington, and the Aleutian Islands in Alaska.
Flat non-mountainous islands are usually considered coral islands. Examples of this type of island would be the Bahamas, Anegada in the British Virgin Islands, Turks & Caicos, the Florida Keys, and the barrier islands of Belize are all examples of coral islands. The majority of Caribbean islands are mountainous and have a volcanic history.
Volcanic islands can be found in several places around the world. Examples include the Hawaiian Islands and the Galapagos Islands in the Pacific, the Aleutian Islands of Alaska, some of the Lesser Antilles in the Caribbean, the Canary Islands and Azores off the coast of Africa, and Iceland. These are just a few of many examples.
A group of four or more islands is called an archipelago. Examples of archipelagos include the Hawaiian Islands and the Philippines.
Hawaiian Islands, Fijian Islands, Jamaica, Haiti/Dominican Republic, Sri Lanka, Taiwan
Little Italy in New York
Two large islands in Europe are Great Britain and Ireland.