Decide what sort of holiday you want to have. Visiting family combined with some sight seeing may be one option. You might just want a relaxing holiday in one location. Exploring as many new locations as you can could be a reason for travel. Or you might just want to try new experiences.
Some people decide on the places they want to visit and then hire a car to travel to each location. Some travellers utilise the public transport systems, particularly rail travel or coaches to move from place to place. Air travel between counties may be a preferred option. Travel companies provide tours throughout different parts of the world. Coach tours are available in most areas while in parts of outback Australia tours in 4 wheel drive vehicles are offered. Increasingly cruises are a popular way to travel and visit new places. River cruises are popular, especially with the 'baby boomers'.
When planning a holiday searching and comparing the websites of tour companies is a good way to see what is available. APT is an Australian company offering tours in many parts of the world. The website allows you to search for tour destinations or travel styles and brochures about tours can be downloaded. Tours can be booked on the website.
Scenic Tours, Viking River Cruises and Avalon Waterways.
There are also websites that provide general information about cruises, including reviews, and provide comparisons between the cruising tours on offer including Cruise Away and Cruise Critic.
APT also offer Coach and Rail tours in different countries, including Australia.
Heritage Tours and Adventure Tours. Intrepid Travel offer tours in many countries including Australia.
If you want to explore Europe by train have a look at the Eurail website for information about Eurail passes, countries you can visit by train, information about trains in Europe plus a guide to planning a trip through Europe by train.