Yes, you can go inside, where you visit the rooms, including the one where Lincoln wrote the Emancipation Proclamation. None of the original furniture remains.

We were advised to drive there as they have free parking on site. They told me that the nearest Metro was 20 minutes walk away. This helped us decide to drive... Hope this helps?

You can see the house from the gate. Not sure if you can pass through after hours.

To see the house, you have to be on a tour, which takes about an hour (although with questions, can run a bit longer). The visitor's center has a few small exhibits and a gift shop. Two hours will do it. It's a fantastic tour. Five stars.

The parking lot is very close to the Visitors Center, where you are required to start. Then you must cross the street and walk a short distance to see the cottage. You do have to walk up one flight of stairs inside; if that is not possible, inquire at the Visitors Center about using the elevator.

Yes: you can buy ahead - and pay a service fee for the convenience; or you can buy them onsite.

We drove there, but it appears there are some local transportation options: METRO RAIL: The Georgia Avenue/Petworth Metro Station (Green & Yellow Lines) is 0.8 miles downhill from Eagle Gate and is the closest metro station to President Lincoln’s Cottage. The station is located at the intersection of Georgia Avenue, New Hampshire Avenue, and Rock Creek Church Road, NW. From the Metro exit, walk south toward Rock Creek Church Road, and then turn left onto Rock Creek Church Road and continue along it for approximately 0.8 miles. Turn right into the gates at the intersection of Upshur Street and Rock Creek Church Road. Alternatively, catch the H8 bus (see below) from a stop at the intersection of New Hampshire and Georgia Avenue, just south of the Metro exit. METRO BUS: The H8 Metro Bus stops at “Rock Creek Church Rd NW and Upshur Street NW” (stop # 1002986) immediately in front of the Eagle Gate entrance. After exiting the bus, the gate will be on the right-hand side of the road. You may also take the 60 Metro Bus to the stop at Upshur Street and 2nd Street, NW. From there, walk east on Upshur Street towards the Eagle Gate entrance. TIP: Most bus and rail employees are not familiar with specific tourist attractions along their routes. They will need to know the line, route, and stop you are looking for in order to assist you rather than the name of the site. When in doubt, contact our staff for support (202)-829-0436 x0.