Self-guided Sightseeing Tour #1 in Key West, United States

The Key West Aquarium is the only public aquarium in Key West, Florida, United States. It is located at 1 Whitehead Street and is marked by Historic Marker 52.

Wikipedia: Key West Aquarium (EN)

The U.S. Coast Guard Headquarters, Key West Station is a historic site in Key West, Florida. It is located at the northwest corner of the intersection of Front and Whitehead Streets. In 1973, it was added to the U.S. National Register of Historic Places.

Wikipedia: U.S. Coast Guard Headquarters, Key West Station (EN), Website, Heritage Website

The Custom House and Old Post Office is a historic site located at 281 Front Street, Key West, Florida, United States. On September 20, 1973, it was added to the U.S. National Register of Historic Places.

Wikipedia: Old Post Office and Customshouse (Key West, Florida) (EN), Website, Heritage Website

The Key West Shipwreck Museum is located in Key West, Florida, United States. It combines actors, films and actual artifacts to tell the story of 400 years of shipwreck salvage in the Florida Keys. The museum itself is a re-creation of a 19th-century warehouse built by wrecker tycoon Asa Tift. Many of the artifacts on display are from the 1985 rediscovery of the wrecked vessel Isaac Allerton, which sank in 1856 on the Florida Keys reef and turned out to be one the richest shipwrecks in Key West's history, having resulted in the Federal Wrecking Court's largest monetary award for the salvage of a single vessel.

Wikipedia: Key West Shipwreck Museum (EN)

The Mel Fisher Maritime Museum is located at 200 Greene Street, Key West, Florida. The museum contains an extensive collection of artifacts from 17th century shipwrecks, such as the Henrietta Marie, Nuestra Señora de Atocha and Santa Margarita. Also included are the shipwrecks and artifacts of The Santa Clara, a Conquistador-era galleon (1564), The Guerrero & Nimble. A rotating gallery exists on the second floor of the museum and is currently displaying an exhibit or artifacts belonging to Cuban Rafters, Balseros, who arrive to Key West in hand-crafted vessels. Terrestrial archaeological sites include The African Cemetery of Key West, located on Higgs Beach. The museum is named for founder Mel Fisher and was created as a 501(c)3 non-profit charity organization, thus Fisher's fortune is not financially linked to the museum. It is a museum, a lab, and a nationally recognized research facility.

Wikipedia: Mel Fisher Maritime Heritage Museum (EN), Website, Heritage Website