Hi @Antonio Coa - There are so many options for someone with this position! You could buy something that needs work, improve its value and then rent it out long term, or buy in an area great for vacationing or corporate travellers / travelling nurses, and do a short term rental, location could be in lots of places. Look around you if you think you'll be personally involved in renovations or management on your first property. What are the things that draw people to an area? Vacation, Hospitals, Schools, even Artists can be a great source for short term rentals, which depending on your market can be quite lucrative, but also can mean more activity on your part.
If something passive is more your style, you could consider a multifamily building/apartment building, using your cash as a down payment and a commercial loan, or depending on your area, you might be able to buy in all cash. If not, something out of state could work. For example, St. Louis Missouri is my playground as an investor and as a realtor to investors. $500,000 could go a long way, maybe 8 doors in cash. More if you're willing to improve to bump up your return.
The world is really your oyster! The questions I would have for you would be, how do you envision your involvement in your investment. Active or passive? Will you use others or want to be personally involved?