In part two of their series on St. Petersburg, Matt and Rachel admire some more of the Coolest Stuff that Russia's former capital has to offer. In this case, some truly amazing architecture and famous landmarks.

Located off the coast of Costa Rica, Cocos Island isn't your average Central American getaway. Tune in as Matt and Rachel explore this island's unique ecosystem -- along with its mysterious history -- in this episode.

Once the capital of Russia, St. Petersburg is often compared to Venice because of its many canals, rivers and bridges. In this first episode of a two-part series, learn more about the city's lovely layout, early history and famous "white nights."

Cherry blossoms, or sakura, are an integral part of Japanese culture. Learn more about the sakura season and Japan's centuries-old love affair with ephemeral white and pink blossoms in this episode.

British Columbia's Great Bear Rainforest is home to ancient trees and wildlife of all kinds, including a rare type of bear. Learn more about this unique ecosystem -- and efforts to conserve and sustainably manage it -- in this episode.

Moscow, the largest city in Russia, is a bustling megacity with a storied past and a burgeoning future. Learn more about Russia's capital city in this episode of The Coolest Stuff on the Planet.

Yonaguni Island is a tiny Japanese island with a big reputation. Learn more about the famous "monument" that has drawn the world's attention to Yonaguni, as well as some of the island's other unusual attractions, in this episode.

The Kanto Festival in Akita City, Japan, is a harvest festival famous for music, parades, chanting -- and men balancing giant poles of lanterns on various parts of their bodies. Discover why the Kanto Festival is Cool Stuff in this episode.

Mount Fuji is the national symbol of Japan and an iconic landmark that's recognized the world over. Take a tour of Japan's beloved mountain -- and learn some surprising trivia along the way -- in this episode of The Coolest Stuff on the Planet.

The Big Cypress Swamp is an essential part of the greater Everglades ecosystem in Florida. Take a swamp tour in this episode of The Coolest Stuff on the Planet.