Once a federal prison housing dangerous and notorious criminals, Alcatraz (The Rock) now welcomes tourists into the cell blocks once occupied by the likes of Al Capone, Machine Gun Kelley, and the Birdman of Alcatraz. Self-guided audio tours have dramatic narratives of Alcatraz’s grim history, including realistic sound effects one would hear in prison. Apart from the prison complex itself, Alcatraz Island essentially operates as a national park. You can spend a full day hiking, taking in the view from multiple observation points and appreciating the natural beauty.

This landmark may be the most visited and photographed monument of Key West. It was created to bear a resemblance to a buoy and is supposed to point out the southernmost location in the continental U.S. It is only 90 miles to Cuba and if you squint you might actually catch sight of the island on a bright and sunny day.

The Philadelphia Zoo holds the distinction of being America’s first zoo, having opened its doors in 1874. It attracted over 228,000 visitors in its debut year and remains one of the city’s prime attractions, now welcoming around 1.2 million visitors annually. Home to more than 1,300 rare and endangered animals, the zoo is renowned for its innovative exhibits, such as the Zoo360 animal exploration trails. Visitors can also enjoy unique experiences like swan boat rides, camel safaris, and even tethered balloon rides, providing panoramic views of the zoo.

Perth’s main attraction is located where Perth meets the Swan River. The 82.5-metre-high Clock Tower, made of copper and glass, contains eighteen bells and is surrounded by a laid trail of ceramic tiles. Enjoy the view, learn about Perth's history and geography and perhaps leave a "love lock" on one of the railings.