Milford Sound is a spectacular fjord located in the southwest of New Zealand's South Island. It is part of the Fiordland National Park, which is a UNESCO World Heritage site. The fjord is surrounded by towering peaks, cascading waterfalls, and dense rainforest, making it one of the most picturesque natural landscapes in the world.

The main attraction of Milford Sound is the cruise on the fjord itself. You can take a tour on a boat that will take you around the fjord, allowing you to witness its stunning beauty up close. You will see towering peaks and cascading waterfalls, such as Stirling and Bowen Falls, and maybe even some marine wildlife such as seals and dolphins. Some cruises also have underwater viewing observatories, where you can observe the marine life of the fjord.

There are also options to take a kayak, fly or helicopter tour which offer different perspectives of the Fjord.

For the outdoor enthusiasts, there are a number of hiking trails that offer spectacular views of the fjord and the surrounding landscape. The Milford Track, which is considered one of the best walks in the world, can be started from here. However, it's a multi-day hike and requires planning and booking in advance.

The best time to visit Milford Sound is during the summer, from December to March. However, it is also spectacular during the winter months and can offer unique experiences, such as snow-capped peaks.

Overall, Milford Sound is considered a natural wonder and a must-see destination for visitors to New Zealand. The beauty of the place is truly breathtaking and it's considered one of the most iconic and popular tourist destinations in the country.